feat(sse,tui): bump spec pin to v0.28.0 + AffectUpdate event (v0.11.0)

Spec pin moved 55101e9 (v0.19.0) → da93ca7 (v0.28.0); vendored
conversation-api-spec.md + conversation_api.contract.md re-snapshotted
from Worldtree at the new SHA. The only material delta consumed in
this bump is Worldtree #204's affect_update SSE event surface.

Wire layer (sse_client.py):
- New AffectUpdate dataclass: sse_id / status / turn_id / snapshot
  (snapshot is None for status="scheduled")
- Added to Event union + _envelope_for_type dispatch branch
- Without this, ratatoskr would crash on any persona-enabled turn
  from a v0.28.0 server (unknown SSE event type → ValueError)

TUI layer (tui.py):
- AffectUpdate routes through the v0.10.0 audit pipeline only — one
  debug-pane line per arrival with dominant_emotion + PAD for
  status="current", lightweight status+turn_id for status="scheduled"
- No transcript / tools / thinking pane writes — the persona UX shape
  (Persona TabPane vs sticky header line) is deferred to a separate
  bump pending operator direction

Tests: 2 new wire-layer tests for current+scheduled parsing + 2 new
presenter audit tests for routing and audit-line shape.

Not yet consumed: GET /agents/{id}/persona_state endpoint (step 2 of
the integration plan).

docs/SPEC-PIN.md

@@ -7,11 +7,18 @@ documents the pin, the vendored artifacts, and the bump procedure.
 
 | Field | Value |
 |---|---|
-| Worldtree git SHA | `55101e909abcd2219833266b6f905c5bc956e0f0` |
-| Worldtree HEAD message | `memory: snapshot — #177 Vili v1 + persona async-decouple shipped as v0.19.0` |
-| Pinned on | 2026-05-20 |
-| Pinned by | brokkr-smithy-dev (initial scaffold) |
-| Worldtree version at pin | `v0.19.0` |
+| Worldtree git SHA | `da93ca7cf613f1dc229a7a44d07fc1d7efc78e25` |
+| Worldtree HEAD message | `feat(#204): v0.28.0 — persona-state observability surface` |
+| Pinned on | 2026-05-25 |
+| Pinned by | ratatoskr-dev (bump for #204 affect_update SSE) |
+| Worldtree version at pin | `v0.28.0` |
+
+## Pin history
+
+| Date | SHA | Version | Notable deltas consumed |
+|---|---|---|---|
+| 2026-05-25 | `da93ca7` | v0.28.0 | #204 — new SSE event `affect_update` (current/scheduled), new endpoint `GET /agents/{id}/persona_state` (not yet consumed), auth-model doc edits |
+| 2026-05-20 | `55101e9` | v0.19.0 | initial scaffold pin |
 
 ## Vendored artifacts
 

docs/conversation-api-spec.md

@@ -55,6 +55,69 @@ conversation_api:
 
 ---
 
+## Authorization model — agent invocation
+
+When you call `POST /sessions` against an agent, the authorization check that fires depends on **which kind of agent** you target. There are two distinct scope namespaces — the spelling differs by one character (`agent` vs `agents`) and the granting mechanism differs entirely. Confusing the two is a common source of bug reports.
+
+### Tier 1 — foundational agents (no `:` in agent_id)
+
+Agents bundled with Worldtree: `mimir`, `lofn`, `soong`, `forseti`, `domari`, `vili`, `actor`, `saga`, `bragi`, `leif`, `troi`, `cara`, `glados`, and any future Asgardian. The agent_id is a simple slug like `mimir` — no colon.
+
+> **About tiers:** Your `tier` is set on the `users` table row your API key resolves to, assigned at key-mint time (see `POST /admin/keys`). Tiers are `anonymous` (dev-mode unauthenticated), `user` (default for newly-issued keys), `free`/`pro` (subscription-shaped, not actively differentiated), and `admin`. The tier you have is visible via `GET /me`'s `tier` field. Tier-derived scopes come from `config/policies.yaml > tiers.<tier>.scopes` — there is no per-key scope override.
+
+**Authorization rule (singular `agent`):**
+
+```yaml
+- id: agent-call-baseline-allow
+  principal:
+    tiers: ["anonymous", "user", "free", "pro", "admin"]
+  action: "agent.call:*"
+  resource: "*"
+  effect: allow
+```
+
+This baseline rule lives at `config/policies.yaml`. Every authenticated tier — including the `user` tier that newly-issued keys default to — already passes this check for every Tier 1 agent. **There is no per-agent scope you can add to "grant" Tier 1 access; it's covered by tier.**
+
+If you get a 422 calling a Tier 1 agent (e.g., `lofn` rejecting with `end_user_id_required`), that's a **request-body validation**, not a scope denial. Check the `error_code` in the response detail — `END_USER_ID_REQUIRED` means the agent requires an `end_user_id` field in the request body; `AUTH_SCOPE_DENIED` (403) would be the actual scope problem. They're not interchangeable.
+
+### Tier 3 — consumer-defined agents (`:` in agent_id)
+
+Agents created at runtime via `POST /agents/define`. The agent_id is `<owner_user_id>:<agent_name>`, e.g., `acme:support-bot`. The `:` in the path is the trigger that switches the auth model.
+
+**Authorization is DB-backed per-resource, NOT policy-driven (plural `agents`):**
+
+```
+scope action checked: agents.call:<owner_user_id>:<agent_name>
+                       ^^^^^^
+                       PLURAL — different namespace from Tier 1
+```
+
+There is **no blanket allow rule** for `agents.call:*` in policy. The grant comes from the live `consumer_agents` table:
+
+- A non-soft-deleted row in `consumer_agents` owned by `ctx.user_id` IS the grant.
+- Cascade soft-delete and owner-initiated `DELETE` revoke it.
+- Missing row → policy defaults to deny (403 `auth_scope_denied`).
+
+To "add the scope" for a Tier 3 agent, you don't amend any config or call an admin endpoint — you `POST /agents/define` to register it under your `user_id`. Owning the row IS the grant. You cannot call another user's Tier 3 agent; ownership is checked at session-create (`row.user_id == ctx.user_id`).
+
+### Common pitfalls
+
+- **Singular vs plural.** Tier 1 uses `agent.call:*` (singular `agent`). Tier 3 uses `agents.call:<owner>:<name>` (plural `agents`). One character difference, two completely different mechanisms. There is no Tier 1 scope named `agent.call:mimir` or `agents.call:mimir` — Tier 1 is granted by baseline rule, not per-agent name.
+- **No scope-mutation API.** `POST /admin/keys` accepts `{user_id, label, tier}` only. There is no per-key scope override mechanism in the storage schema. To change a user's effective scopes, change their `tier`, not their key. Per-resource Tier 3 grants flow through `POST /agents/define` (and its DELETE counterpart), not through admin endpoints.
+- **422 vs 403.** A 422 is body-validation (e.g., `end_user_id_required`); a 403 is auth-policy denial (`auth_scope_denied`). Different fix paths. Read the `error_code` in `detail`.
+
+### Quick decision table for consumers
+
+| Target | Auth requirement |
+|---|---|
+| Tier 1 agent (e.g., `mimir`) | Authenticated tier ≥ `user`. No additional body requirements |
+| Tier 1 agent `lofn` (the default welcoming intermediary) | Authenticated tier ≥ `user` + `end_user_id` field required in request body. 422 `END_USER_ID_REQUIRED` if absent |
+| Tier 3 agent (any agent_id containing `:`) | `end_user_id` field required in body. AND the row must be owner-matched: `POST /agents/define` first to create a row under your `user_id`, then session-create works against your existing key. Cross-user Tier 3 invocation is rejected with 403 |
+
+> **Programmatic discovery of `end_user_id` requirements:** as of v0.22.x there is no field on `GET /agents` indicating which agents require `end_user_id` — the spec line above (lofn + Tier 3) is the authoritative list, and 422 `END_USER_ID_REQUIRED` is the fallback signal at request time. Adding a discoverable `requires_end_user_id` field on `AgentInfoResponse` is on the table as a small future capability; ping if you want to drive it.
+
+---
+
 ## GET /me
 
 Returns the authenticated principal's identity and key metadata. Lets a client verify its key on boot without triggering agent-config-loading side effects.
@@ -1878,6 +1941,45 @@ Tool-using turns cycle through `CallingLLM → ProcessingTools → CallingLLM
 
 Clients that don't need phase events can filter on `event["type"] != "worker_phase"` client-side. Existing SSE consumers that switch on `event["type"]` ignore this event type without code changes.
 
+### affect_update
+
+Persona-state observability event (issue #204). Fires twice per turn for agents with `persona.enabled: true` on non-ephemeral sessions; suppressed entirely for persona-disabled agents (e.g. `domari`, `muninn`), Tier 3 consumer-defined agents (Phase 2.0), and ephemeral sessions.
+
+**Start-of-turn — `status: "current"`:**
+
+Emitted immediately at the start of each qualifying turn, before any `worker_phase` event. Carries the agent's current persona snapshot reflecting all prior turns' completed appraisals.
+
+```json
+{
+  "type": "affect_update",
+  "status": "current",
+  "turn_id": 42,
+  "snapshot": {
+    "agent_id": "mimir",
+    "pad": {"pleasure": 0.52, "arousal": 0.47, "dominance": 0.50},
+    "dominant_emotion": "curiosity",
+    "emotions_active": [
+      {"type": "curiosity", "intensity": 0.6, "decay_remaining_s": 202.7}
+    ],
+    "baseline_pad": {"pleasure": 0.50, "arousal": 0.40, "dominance": 0.50},
+    "mood_drift": {"valence_delta": 0.02, "arousal_delta": 0.07},
+    "last_updated_at": "2026-05-25T22:30:18+00:00"
+  }
+}
+```
+
+**End-of-turn — `status: "scheduled"`:**
+
+Emitted after the post-turn appraisal task has been scheduled (per #177 Phase A's fire-and-forget discipline) and before `done`. Lightweight notification — no PAD numbers, since the appraisal is still running asynchronously. The result lands in the NEXT turn's `status: "current"` snapshot.
+
+```json
+{"type": "affect_update", "status": "scheduled", "turn_id": 42}
+```
+
+`scheduled` is skipped on turn failure/cancel paths (the appraisal was never reached); `current` still fires unconditionally for qualifying turns.
+
+Bootstrap reads available via `GET /agents/{agent_id}/persona_state` (same `snapshot` shape, requires `persona.read` scope).
+
 ### thinking
 
 Incremental reasoning/thinking content (from thinking-enabled models).

docs/conversation_api.contract.md

@@ -1851,6 +1851,36 @@ SQLite `consumer_agents` table.
   before any other processing; non-slug user_ids return 403
   `tier3_user_id_unsupported`.
 
+### Persona-state observability (issue #204)
+
+- **INV-204-1 (affect_update event type)**: `affect_update` is a
+  top-level SSE event `type` discriminator, sibling to `worker_phase`
+  / `tool_*` / `text` / `thinking` / `done`. Not a `worker_phase` sub-
+  phase. INV-061's "BuildingPrompt is the FIRST event" property is
+  scoped to `worker_phase` events only — `affect_update status="current"`
+  may precede BuildingPrompt for persona-enabled agents.
+- **INV-204-2 (per-turn emission)**: For agents with persona enabled
+  on non-ephemeral sessions, `stream_turn` emits `status="current"`
+  before any other SSE event on a successful or failed turn, and
+  `status="scheduled"` after `update_after_turn` schedules the
+  appraisal task (success path only — skipped on cancel / error
+  before update_after_turn was reached). See contract
+  `docs/contracts/issues/204.contract.md`.
+- **INV-204-3 (emission suppression)**: Persona-disabled agents and
+  ephemeral sessions emit ZERO `affect_update` events.
+- **INV-204-6 / INV-204-7 (persona_state endpoint)**: New
+  `GET /agents/{agent_id}/persona_state` gated on Heimdall scope
+  `persona.read`. Route ordering: auth → Tier 3 short-circuit (404
+  `persona_not_configured`) → Tier 1/2 existence (404
+  `agent_not_available`) → persona-enabled check (404
+  `persona_not_configured`) → snapshot (200).
+- **INV-204-9 (read-only registry primitive)**: `PersonaRegistry.get_state`
+  is mutex-free and never mutates `persona.emotions`. Eventual
+  consistency under concurrent `_appraisal_wrapper` mutations.
+- **INV-204-14 (replay participation)**: `affect_update` events flow
+  through `_publish`, so SSE resume / replay handles them with no
+  special case.
+
 ### Storage extension
 
 The `consumer_agents` table lives in `core/heimdall/storage/sqlite.py`

persistent-memory.md

@@ -32,9 +32,9 @@ separate dev team rather than an in-tree Worldtree tool.
 
 ## Current state / in-flight
 
-_As of 2026-05-25 (post-v0.8.1 text streams inline, no overlap):_
+_As of 2026-05-25 (post-v0.8.2 drop double-print; v0.9.0 live-md next):_
 
-**Status: v0.8.1 shipped.** Eleven core features complete (`sse_client`
+**Status: v0.8.2 shipped.** Eleven core features complete (`sse_client`
 #1, `sessions` #2, `cli` #3, `tui` #4, `--end-user-id` #5, TUI
 startup error visibility #6, presenter contract semantics amendment
 #12, startup agent picker #8, §5 layout reshape + Tools pane #13)
@@ -51,7 +51,8 @@ Static in the footer (static "Tools" v1; dynamic when more tabs
 land). CLI mode (--send) unaffected by design — INV-018.
 
 Last commits on `main`:
-- v0.8.1 fix(tui): kill current-text Static; Text streams inline via coalesce
+- v0.8.2 fix(tui): drop post-Done Markdown body re-render (no double-print)
+- `11ef683` fix(tui,sse): inline Text streaming + empty-id keepalive skip (v0.8.1)
 - `9fade55` feat(local_agents): JSON-backed local tier-3 index + picker merge (v0.8.0)
 - `9918c10` fix(tui): coalesce thinking deltas on `\n` (v0.7.1)
 - `c086ae2` feat(tier3): ratatoskr.tier3 module + CLI (v0.7.0)

pyproject.toml

@@ -4,7 +4,7 @@ build-backend = "hatchling.build"
 
 [project]
 name = "ratatoskr"
-version = "0.8.1"
+version = "0.11.0"
 description = "Worldtree Conversation API debug TUI — multi-pane observability dashboard"
 readme = "README.md"
 requires-python = ">=3.12"
@@ -42,9 +42,9 @@ Repository = "https://gitea.phasefinal.com/vh/ratatoskr"
 # Ratatoskr is built against Worldtree at this commit; the vendored
 # spec snapshot in docs/ reflects that SHA.
 [tool.ratatoskr.spec-pin]
-worldtree-spec-rev = "55101e909abcd2219833266b6f905c5bc956e0f0"
-worldtree-version = "v0.19.0"
-pinned-on = "2026-05-20"
+worldtree-spec-rev = "da93ca7cf613f1dc229a7a44d07fc1d7efc78e25"
+worldtree-version = "v0.28.0"
+pinned-on = "2026-05-25"
 
 [tool.hatch.build.targets.wheel]
 packages = ["src/ratatoskr"]

src/ratatoskr/sse_client.py

@@ -111,6 +111,30 @@ class Cancelled:
     partial_message_id: int | None
 
 
+@dataclass(frozen=True)
+class AffectUpdate:
+    """SSE event `affect_update`: persona-state observability snapshot.
+
+    Two emissions per qualifying turn (persona-enabled agent on non-
+    ephemeral session): `status="current"` at turn start carrying the full
+    snapshot, `status="scheduled"` after post-turn appraisal kicks off
+    (lightweight — `snapshot` is None). Suppressed entirely for persona-
+    disabled agents (e.g. `domari`, `muninn`), Tier 3 consumer-defined
+    agents (Phase 2.0), and ephemeral sessions.
+
+    Bootstrap reads available via `GET /agents/{agent_id}/persona_state`
+    (same `snapshot` shape, requires `persona.read` scope).
+
+    See docs/conversation-api-spec.md § affect_update (Worldtree #204,
+    v0.28.0).
+    """
+
+    sse_id: SseId
+    status: str  # "current" | "scheduled"
+    turn_id: int
+    snapshot: dict[str, Any] | None  # None when status="scheduled"
+
+
 Event = (
     WorkerPhase
     | Thinking
@@ -121,6 +145,7 @@ Event = (
     | Done
     | Error
     | Cancelled
+    | AffectUpdate
 )
 
 
@@ -284,6 +309,17 @@ def _envelope_for_type(body: dict[str, Any], sse_id: SseId) -> Event:
             reason=body.get("reason"),
             partial_message_id=body.get("partial_message_id"),
         )
+    if t == "affect_update":
+        # Worldtree #204 / v0.28.0: persona-state observability event.
+        # status="current" carries full snapshot at turn start;
+        # status="scheduled" omits snapshot (lightweight post-appraisal-
+        # kickoff notification).
+        return AffectUpdate(
+            sse_id=sse_id,
+            status=body["status"],
+            turn_id=body["turn_id"],
+            snapshot=body.get("snapshot"),
+        )
     raise ValueError(f"unknown SSE event type: {t!r}")
 
 

src/ratatoskr/tui.py

@@ -10,13 +10,15 @@ from __future__ import annotations
 
 import asyncio
 import sys
+import time as _time
 from dataclasses import dataclass
+from datetime import datetime as _datetime
 from typing import ClassVar, Literal
 
 import httpx
 from textual.app import App, ComposeResult
 from textual.binding import Binding
-from textual.containers import Horizontal, Vertical
+from textual.containers import Horizontal, Vertical, VerticalScroll
 from textual.theme import Theme
 from textual.widgets import (
     Footer,
@@ -39,6 +41,7 @@ from ratatoskr.sessions import (
     list_agents,
 )
 from ratatoskr.sse_client import (
+    AffectUpdate,
     CancelAlreadyCompleted,
     CancelFailed,
     Cancelled,
@@ -178,6 +181,62 @@ def _plain_label(event: Event) -> str:
     return f"[unknown_event] {type(event).__name__}"
 
 
+def _ts() -> str:
+    """HH:MM:SS.fff wall-clock timestamp for debug-pane log lines."""
+    now = _datetime.now()
+    return now.strftime("%H:%M:%S") + f".{now.microsecond // 1000:03d}"
+
+
+def _audit_line(event: Event) -> str:
+    """One-line wire-level audit summary for the debug pane.
+
+    v0.10.0: every SSE event arrival lands as one of these in the debug
+    pane (Text and Thinking deltas are aggregated into the turn summary
+    instead — token-rate per-delta lines would drown the pane). Shape:
+    `[HH:MM:SS.fff] event_type sse_id=T:S key=val …`.
+    """
+    sid = getattr(event, "sse_id", None)
+    sid_str = f"{sid.turn_id}:{sid.seq}" if sid is not None else "-"
+    kind = type(event).__name__.lower()
+    if isinstance(event, WorkerPhase):
+        detail = f"phase={event.phase} turn_id={event.turn_id}"
+    elif isinstance(event, ToolStart):
+        detail = f"name={event.name} args={event.arguments!r:.80}"
+    elif isinstance(event, ToolResult):
+        detail = f"name={event.name} duration_ms={event.duration_ms}"
+    elif isinstance(event, TextBoundary):
+        detail = f"kind={event.kind} char_offset={event.char_offset}"
+    elif isinstance(event, Done):
+        detail = (
+            f"turn_id={event.sse_id.turn_id} model={event.model} "
+            f"duration_ms={event.duration_ms}"
+        )
+    elif isinstance(event, Error):
+        detail = (
+            f"turn_id={event.sse_id.turn_id} code={event.error_code} "
+            f"message={event.message!r:.80}"
+        )
+    elif isinstance(event, Cancelled):
+        detail = f"turn_id={event.turn_id} reason={event.reason!r}"
+    elif isinstance(event, AffectUpdate):
+        # Worldtree #204 / v0.28.0. status="current" carries the full
+        # snapshot; surface dominant_emotion + PAD inline so the operator
+        # sees persona drift at a glance. status="scheduled" is
+        # lightweight — no PAD, just the appraisal-kickoff marker.
+        if event.snapshot is not None:
+            pad = event.snapshot.get("pad") or {}
+            detail = (
+                f"status={event.status} turn_id={event.turn_id} "
+                f"dominant_emotion={event.snapshot.get('dominant_emotion')!r} "
+                f"pad=({pad.get('pleasure')},{pad.get('arousal')},{pad.get('dominance')})"
+            )
+        else:
+            detail = f"status={event.status} turn_id={event.turn_id}"
+    else:  # Text / Thinking handled by counter path; fallback for safety
+        detail = ""
+    return f"[{_ts()}] {kind} sse_id={sid_str} {detail}".rstrip()
+
+
 @dataclass(slots=True)
 class TuiPresenterState:
     """Per-turn presenter state for TUI mode (issue #12).
@@ -194,20 +253,29 @@ class TuiPresenterState:
     # only on `\n` boundaries (one written line per natural paragraph) or
     # when the run closes (any leftover tail).
     thinking_chunk_buffer: str = ""
-    # v0.8.1: same pattern for Text deltas. Pre-v0.8.1 the Text deltas
-    # streamed into a dedicated #current-text Static below the transcript;
-    # that Static (docked-bottom, height: auto) grew during streaming and
-    # visually OVERLAPPED the transcript above (Textual didn't dynamically
-    # resize the 1fr transcript while the dock-bottom child expanded).
-    # The Static is gone in v0.8.1 — Text deltas coalesce on `\n` and write
-    # directly to `log` (transcript), the same shape thinking uses.
+    # v0.9.0: Text accumulator for live Markdown rendering. Worldtree emits
+    # Text deltas at token granularity; each delta appends to this buffer
+    # and the current_response_widget re-renders Markdown(text_chunk_buffer)
+    # in place. On terminal event the widget is finalized + reference clears.
     text_chunk_buffer: str = ""
+    # v0.9.0: reference to the Static widget holding the current turn's
+    # response Markdown Renderable. None between turns.
+    current_response_widget: object = None
+    # v0.10.0: per-turn counters for the debug-pane turn-summary line. Text
+    # and Thinking events arrive at token rate; emitting per-delta debug
+    # lines would drown the pane. Instead we count them and surface
+    # aggregated totals when the turn closes.
+    text_delta_count: int = 0
+    text_byte_count: int = 0
+    thinking_delta_count: int = 0
+    thinking_byte_count: int = 0
+    turn_start_ts: float = 0.0
 
     def render(
         self,
         event: Event,
         *,
-        log: RichLog,
+        transcript: "VerticalScroll",
         tools_log: RichLog,
         debug_log: RichLog,
         thinking_log: RichLog,
@@ -215,14 +283,14 @@ class TuiPresenterState:
     ) -> None:
         """Render one Worldtree SSE event with the TUI hierarchy + coalescing.
 
-        v0.8.1 routing:
-          - `log` (transcript) = chat content: user-prompt echo (written
-            outside the presenter), coalesced Text deltas, terminal labels,
-            optional post-Done Markdown body.
-          - `tools_log` = ToolStart + ToolResult.
-          - `debug_log` = WorkerPhase + TextBoundary.
-          - `thinking_log` = streaming Thinking deltas inline (coalesced on
-            `\n`). Rule(start)/Rule(end) wrap each run.
+        v0.9.0 routing:
+          - `transcript` (VerticalScroll) = chat content: each turn mounts
+            child widgets (turn-header / prompt-echo / response Markdown /
+            done-label). Live Markdown rendering during Text streaming.
+          - `tools_log` (RichLog) = ToolStart + ToolResult.
+          - `debug_log` (RichLog) = WorkerPhase + TextBoundary.
+          - `thinking_log` (RichLog) = streaming Thinking deltas inline
+            (coalesced on `\n`); Rule(start)/Rule(end) wrap each run.
 
         Exceptions caught at the presenter boundary (INV-009 fallback).
         """
@@ -230,7 +298,7 @@ class TuiPresenterState:
             event,
             (
                 WorkerPhase, Thinking, Text, TextBoundary,
-                ToolStart, ToolResult, Done, Error, Cancelled,
+                ToolStart, ToolResult, Done, Error, Cancelled, AffectUpdate,
             ),
         )
         from rich.text import Text as RichText
@@ -240,6 +308,37 @@ class TuiPresenterState:
             return RichText(s, style=_AU_DEMOTED)
 
         try:
+            # v0.10.0: per-event audit log line to debug pane. Text and
+            # Thinking arrive at token rate, so we count them rather than
+            # emit a line per delta — totals are reported in the turn-
+            # summary on Done/Error/Cancelled. Everything else gets one
+            # debug-pane line per arrival with timestamp + sse_id + a short
+            # event-specific summary, giving the operator a wire-level
+            # timeline of what the server sent.
+            if isinstance(event, Text):
+                if self.text_delta_count == 0:
+                    if self.turn_start_ts == 0.0:
+                        self.turn_start_ts = _time.monotonic()
+                self.text_delta_count += 1
+                self.text_byte_count += len(event.content)
+            elif isinstance(event, Thinking):
+                if self.thinking_delta_count == 0:
+                    if self.turn_start_ts == 0.0:
+                        self.turn_start_ts = _time.monotonic()
+                self.thinking_delta_count += 1
+                self.thinking_byte_count += len(event.content)
+            else:
+                if self.turn_start_ts == 0.0:
+                    self.turn_start_ts = _time.monotonic()
+                debug_log.write(_dim(_audit_line(event)))
+            # v0.11.0: AffectUpdate is debug-pane-only for now (the audit
+            # line emitted above is the complete handling). Return early
+            # so the event doesn't pass through the thinking-close path
+            # or fall into the unknown-event ValueError branch. A full
+            # persona surface (Persona TabPane, sticky header line, or
+            # similar) is deferred to a later bump pending UX direction.
+            if isinstance(event, AffectUpdate):
+                return
             # v0.7.1: Thinking deltas coalesce by newline before flushing.
             # Worldtree emits Thinking events at token granularity; per-delta
             # RichLog writes produce one visual line per token (per-token-per-
@@ -288,52 +387,95 @@ class TuiPresenterState:
                 # coalesced on `\n`. Same pattern as Thinking (v0.7.1).
                 # The pre-v0.8.1 #current-text Static is gone — its dock-
                 # bottom growth was overlapping the transcript visually.
+                #
+                # v0.9.0: Text deltas accumulate in text_chunk_buffer and
+                # the current_response_widget renders Markdown(buffer) in
+                # place. First Text delta of the turn mounts a fresh Static
+                # holding the Markdown Renderable; subsequent deltas update
+                # the same widget. Live markdown rendering — no post-Done
+                # re-render needed.
+                from rich.markdown import Markdown
+
                 self.text_chunk_buffer += event.content
-                while "\n" in self.text_chunk_buffer:
-                    line, _, rest = self.text_chunk_buffer.partition("\n")
-                    if line:
-                        log.write(line)
-                    self.text_chunk_buffer = rest
+                # --raw bypasses Markdown rendering — useful for debugging
+                # the raw text stream surface, and matches the pre-v0.9.0
+                # --raw semantics (which dropped the post-Done Markdown re-
+                # render). In raw mode the response widget holds plain str.
+                rendered = (
+                    self.text_chunk_buffer if raw else Markdown(self.text_chunk_buffer)
+                )
+                if self.current_response_widget is None:
+                    self.current_response_widget = Static(
+                        rendered, classes="response-md"
+                    )
+                    transcript.mount(self.current_response_widget)
+                else:
+                    self.current_response_widget.update(rendered)
+                transcript.scroll_end(animate=False)
                 return
             if isinstance(event, (Done, Error, Cancelled)):
-                # Terminal event: flush any remaining text tail before the
-                # label / Markdown body lands.
-                if self.text_chunk_buffer:
-                    log.write(self.text_chunk_buffer)
-                    self.text_chunk_buffer = ""
-                # Terminal labels tinted per outcome (Aurora green / Dawn red
-                # / Dawn yellow) for at-a-glance scanning.
+                # v0.10.0: emit turn-summary to debug pane before clearing
+                # counters. Aggregates the per-event totals (Text + Thinking
+                # deltas don't get per-event audit lines because they arrive
+                # at token rate; the summary surfaces what was elided).
+                elapsed_ms = (
+                    int((_time.monotonic() - self.turn_start_ts) * 1000)
+                    if self.turn_start_ts
+                    else 0
+                )
+                turn_id = (
+                    event.sse_id.turn_id
+                    if hasattr(event, "sse_id")
+                    else getattr(event, "turn_id", "?")
+                )
+                debug_log.write(_dim(
+                    f"[{_ts()}] turn_summary turn_id={turn_id} "
+                    f"text_deltas={self.text_delta_count} "
+                    f"text_bytes={self.text_byte_count} "
+                    f"thinking_deltas={self.thinking_delta_count} "
+                    f"thinking_bytes={self.thinking_byte_count} "
+                    f"elapsed_ms={elapsed_ms}"
+                ))
+                # Terminal event: finalize the response widget (clear ref so
+                # the next turn mounts a fresh one). The accumulated text is
+                # already rendered as Markdown in the widget — no post-Done
+                # re-render, no double-print.
+                self.text_chunk_buffer = ""
+                self.current_response_widget = None
+                # Terminal labels mount as styled Statics. Tinted per outcome
+                # (Aurora green / Dawn red / Dawn yellow) for at-a-glance
+                # scanning.
                 if isinstance(event, Done):
-                    log.write(RichText(
-                        f"[done] turn_id={event.sse_id.turn_id} model={event.model} "
-                        f"duration={_format_duration_ms(event.duration_ms)} "
-                        f"usage {_format_usage(event.usage, arrow='→')}",
-                        style=_AU_SUCCESS,
+                    transcript.mount(Static(
+                        RichText(
+                            f"[done] turn_id={event.sse_id.turn_id} "
+                            f"model={event.model} "
+                            f"duration={_format_duration_ms(event.duration_ms)} "
+                            f"usage {_format_usage(event.usage, arrow='→')}",
+                            style=_AU_SUCCESS,
+                        ),
+                        classes="done-label",
                     ))
-                    # v0.8.1: in non-raw mode, ALSO write Rule + Markdown body
-                    # as the canonical rendered version. The streamed lines
-                    # above are plain text; the Markdown body re-renders the
-                    # same content with proper formatting (lists, bold, code
-                    # blocks). Some duplication is acceptable — the streamed
-                    # content gave live progress; the Markdown is the final.
-                    if not raw:
-                        from rich.markdown import Markdown
-                        from rich.rule import Rule
-
-                        log.write(Rule(style=_AU_DEMOTED))
-                        log.write(Markdown(event.response))
                 elif isinstance(event, Error):
-                    log.write(RichText(
-                        f"[error] turn_id={event.sse_id.turn_id} code={event.error_code} "
-                        f"message={event.message!r}",
-                        style=_AU_ERROR,
+                    transcript.mount(Static(
+                        RichText(
+                            f"[error] turn_id={event.sse_id.turn_id} "
+                            f"code={event.error_code} message={event.message!r}",
+                            style=_AU_ERROR,
+                        ),
+                        classes="error-label",
                     ))
                 else:  # Cancelled
-                    log.write(RichText(
-                        f"[cancelled] turn_id={event.turn_id} reason={event.reason!r} "
-                        f"partial_message_id={event.partial_message_id}",
-                        style=_AU_WARNING,
+                    transcript.mount(Static(
+                        RichText(
+                            f"[cancelled] turn_id={event.turn_id} "
+                            f"reason={event.reason!r} "
+                            f"partial_message_id={event.partial_message_id}",
+                            style=_AU_WARNING,
+                        ),
+                        classes="cancelled-label",
                     ))
+                transcript.scroll_end(animate=False)
                 return
             if isinstance(event, WorkerPhase):
                 # v0.5.0: telemetry → Debug pane, not transcript.
@@ -365,22 +507,24 @@ class TuiPresenterState:
             # the original event AND a render_error line with the class name only
             # (NO exception message — security clause). Volva F1 fix.
             #
-            # v0.6.0 routing-under-failure preservation — fallback writes go
-            # to the same destination the successful render would have used:
-            #   - ToolStart/ToolResult       → tools_log
-            #   - Thinking                   → thinking_log
-            #   - WorkerPhase/TextBoundary   → debug_log
-            #   - everything else            → log
+            # v0.9.0 routing-under-failure: panes (RichLog) still write Strip
+            # lines; transcript (VerticalScroll) mounts a Static instead.
             if isinstance(event, (ToolStart, ToolResult)):
-                target = tools_log
+                tools_log.write(_plain_label(event))
+                tools_log.write(f"[render_error] {type(exc).__name__}")
             elif isinstance(event, Thinking):
-                target = thinking_log
+                thinking_log.write(_plain_label(event))
+                thinking_log.write(f"[render_error] {type(exc).__name__}")
             elif isinstance(event, (WorkerPhase, TextBoundary)):
-                target = debug_log
+                debug_log.write(_plain_label(event))
+                debug_log.write(f"[render_error] {type(exc).__name__}")
             else:
-                target = log
-            target.write(_plain_label(event))
-            target.write(f"[render_error] {type(exc).__name__}")
+                # Transcript-bound event (Text / Done / Error / Cancelled).
+                transcript.mount(Static(_plain_label(event), classes="error-label"))
+                transcript.mount(
+                    Static(f"[render_error] {type(exc).__name__}", classes="error-label")
+                )
+                transcript.scroll_end(animate=False)
 
 
 class AgentPickerApp(App[str | None]):
@@ -569,11 +713,40 @@ class RatatoskrApp(App[int]):
     }
     /* v0.6.5: thinking-current Static removed; thinking now streams
        directly into thinking-log so the whole pane scrolls naturally. */
-    #transcript {
+    /* v0.9.0: transcript is a VerticalScroll container holding dynamically
+       mounted Statics + Markdown widgets per turn. Live Markdown rendering
+       replaces the v0.8.x RichLog approach which couldn't render Markdown
+       in-flight (only on Done as a re-render → double-print bug). */
+    #transcript-scroll {
         height: 1fr;
         background: $background;
         padding: 0 1;
     }
+    /* Per-turn mounted widgets carry id-prefix conventions:
+       - .turn-header   "── turn N ──" (dim)
+       - .prompt-echo   "❯ user input"  (aurora bright cyan)
+       - .response-md   Markdown(accumulated_text) — updated live
+       - .done-label    "[done] turn_id=…" (aurora green)
+       - .error-label   "[error] …"        (dawn red)
+       - .cancelled-label "[cancelled] …"  (dawn yellow)
+    */
+    .turn-header {
+        height: auto;
+        padding: 0 1;
+        color: $au-dark-60;
+    }
+    .prompt-echo {
+        height: auto;
+        padding: 0 1;
+    }
+    .response-md {
+        height: auto;
+        padding: 0 1;
+    }
+    .done-label, .error-label, .cancelled-label {
+        height: auto;
+        padding: 0 1;
+    }
     /* v0.8.1: #current-text Static removed. Streaming text now coalesces
        on `\n` and writes directly to #transcript (same pattern as v0.7.1
        thinking fix). Eliminates the dock-bottom-growth-overlap bug. */
@@ -675,7 +848,12 @@ class RatatoskrApp(App[int]):
         # work without widget-level markup=True.
         with Horizontal(id="main-row"):
             with Vertical(id="left-column"):
-                yield RichLog(id="transcript", wrap=True, markup=False, highlight=False)
+                # v0.9.0: transcript is a VerticalScroll holding per-turn
+                # mounted widgets (turn header, prompt echo, response Markdown,
+                # done label). Live Markdown rendering happens via Static
+                # widgets holding `Markdown` Renderables, updated as Text
+                # deltas arrive.
+                yield VerticalScroll(id="transcript-scroll")
                 yield Input(id="prompt", placeholder="Type a message and press Enter")
             with Vertical(id="right-column"):
                 with TabbedContent(id="side-panes"):
@@ -736,22 +914,40 @@ class RatatoskrApp(App[int]):
         )
         self.state = "idle"
         self._set_hint(self.HINT_IDLE)
+        # v0.10.0: startup audit so the debug pane carries a complete
+        # session bootstrap line (server URL, agent, end_user_id, raw flag,
+        # session tail) before the first turn fires.
+        self._audit(
+            f"app_mounted server={self.args.server_url} agent_id={self.agent_id!r} "
+            f"session={self.session_id[-8:]} raw={self.args.raw} "
+            f"end_user_id={getattr(self.args, 'end_user_id', None)!r}"
+        )
 
     def _write_turn_headers(self, turn_id: int) -> None:
-        """v0.6.0: Write `── turn N ──` Rule headers across every pane so
-        operators can visually correlate sections during cross-pane
-        debugging. Called from `_stream_turn_worker` on first event of
-        each new turn (idempotent per turn via active_turn_id guard).
+        """v0.6.0: turn-ID headers across every pane for cross-pane
+        correlation. v0.9.0: transcript is a VerticalScroll; mounts a
+        Static with rule-style text instead of writing a Rule Renderable
+        to RichLog. Other panes still use RichLog.write(Rule).
         """
         from rich.rule import Rule
+        from rich.text import Text as RichText
 
         title = f"turn {turn_id}"
         rule = Rule(title=title, style=_AU_DEMOTED)
         try:
-            self.query_one("#transcript", RichLog).write(rule)
+            # Transcript (VerticalScroll): mount a styled Static.
+            transcript = self.query_one("#transcript-scroll", VerticalScroll)
+            transcript.mount(
+                Static(
+                    RichText(f"── turn {turn_id} ──", style=_AU_DEMOTED),
+                    classes="turn-header",
+                )
+            )
+            # Other panes (RichLog): write the Rule Renderable.
             self.query_one("#tools-log", RichLog).write(rule)
             self.query_one("#debug-log", RichLog).write(rule)
             self.query_one("#thinking-log", RichLog).write(rule)
+            transcript.scroll_end(animate=False)
         except Exception:
             # Defensive: widget tree may be tearing down — never let a
             # turn-header write block the SSE consumer.
@@ -766,13 +962,51 @@ class RatatoskrApp(App[int]):
             # Widget may be gone during shutdown; ignore.
             pass
 
+    def _audit(self, line: str) -> None:
+        """Write a timestamped audit line to the debug pane.
+
+        v0.10.0: shared sink for app-level events that don't pass through
+        the presenter — state transitions, worker spawn/cancel, cancel POST
+        lifecycle, startup probes. The presenter's per-event audit lives at
+        `_audit_line()`; this is its app-side counterpart.
+        """
+        try:
+            from rich.text import Text as RichText
+            self.query_one("#debug-log", RichLog).write(
+                RichText(f"[{_ts()}] {line}", style=_AU_DEMOTED)
+            )
+        except Exception:
+            # Widget may not exist yet (pre-mount) or be tearing down.
+            pass
+
+    def _transition(
+        self, new_state: Literal["idle", "streaming", "cancelling"], reason: str
+    ) -> None:
+        """Set self.state with debug-pane audit log.
+
+        Every state machine transition flows through here so the debug pane
+        carries a complete idle→streaming→cancelling→idle timeline with the
+        triggering reason. Cheap; safe to call from any context.
+        """
+        old = self.state
+        self.state = new_state
+        if old != new_state:
+            self._audit(f"state {old} → {new_state} reason={reason}")
+
     async def on_input_submitted(self, event: Input.Submitted) -> None:
-        """Echo user prompt, spawn stream worker; busy notice if not idle."""
+        """Echo user prompt, spawn stream worker; busy notice if not idle.
+
+        v0.9.0: prompt echo mounts as a Static in the transcript VerticalScroll
+        (was log.write to RichLog).
+        """
         if event.input.id != "prompt":
             return
-        log = self.query_one("#transcript", RichLog)
+        transcript = self.query_one("#transcript-scroll", VerticalScroll)
         if self.state != "idle":
-            log.write("[busy] turn in flight; input ignored")
+            transcript.mount(
+                Static("[busy] turn in flight; input ignored", classes="error-label")
+            )
+            transcript.scroll_end(animate=False)
             event.input.value = ""
             return
         content = event.input.value.strip()
@@ -781,35 +1015,53 @@ class RatatoskrApp(App[int]):
         # v0.4.1 retheme: operator's voice gets Australis bright cyan so it
         # stands out against the default-foreground assistant text below it.
         from rich.text import Text as RichText
-        log.write(RichText(f"❯ {content}", style=_AU_USER_ECHO))  # noqa: RUF001
+        transcript.mount(
+            Static(
+                RichText(f"❯ {content}", style=_AU_USER_ECHO),  # noqa: RUF001
+                classes="prompt-echo",
+            )
+        )
+        transcript.scroll_end(animate=False)
         event.input.value = ""
-        self.state = "streaming"
+        self._transition("streaming", "input_submitted")
+        self._audit(f"worker_spawn content_len={len(content)}")
         self._set_hint(self.HINT_STREAMING)
         self.stream_worker = self.run_worker(
             self._stream_turn_worker(content), exclusive=True
         )
 
     async def _stream_turn_worker(self, content: str) -> None:
-        """Drive stream_turn, render events via TuiPresenterState (issue #12)."""
+        """Drive stream_turn, render events via TuiPresenterState.
+
+        v0.9.0: transcript is a VerticalScroll; the presenter's `transcript`
+        argument is the container, and the presenter mounts Static / Markdown-
+        backed widgets directly. Wire-error labels mount as `error-label`
+        Statics into the transcript-scroll.
+        """
         assert self.state == "streaming"
         assert self.client is not None
         assert content
-        log = self.query_one("#transcript", RichLog)
+        transcript = self.query_one("#transcript-scroll", VerticalScroll)
         tools_log = self.query_one("#tools-log", RichLog)
         debug_log = self.query_one("#debug-log", RichLog)
         thinking_log = self.query_one("#thinking-log", RichLog)
         presenter = TuiPresenterState()
+
+        def _mount_wire_error(label: str) -> None:
+            try:
+                transcript.mount(Static(label, classes="error-label"))
+                transcript.scroll_end(animate=False)
+            except Exception:
+                pass
+
         try:
             async for event in stream_turn(self.client, self.session_id, content):
                 if self.active_turn_id is None:
                     self.active_turn_id = event.sse_id.turn_id
-                    # v0.6.0: turn-ID headers across all panes so the
-                    # operator can visually correlate sections during
-                    # cross-pane debugging.
                     self._write_turn_headers(self.active_turn_id)
                 presenter.render(
                     event,
-                    log=log,
+                    transcript=transcript,
                     tools_log=tools_log,
                     debug_log=debug_log,
                     thinking_log=thinking_log,
@@ -818,17 +1070,22 @@ class RatatoskrApp(App[int]):
                 if isinstance(event, (Done, Error, Cancelled)):
                     break
         except SseConnectFailed as exc:
-            log.write(f"[sse_connect_failed] status={exc.status} body={exc.body!r}")
+            self._audit(f"sse_connect_failed status={exc.status} body={exc.body!r:.120}")
+            _mount_wire_error(f"[sse_connect_failed] status={exc.status} body={exc.body!r}")
         except SseConnectionDropped as exc:
-            log.write(f"[connection_dropped] last_seen={exc.last_seen_sse_id}")
+            self._audit(f"connection_dropped last_seen={exc.last_seen_sse_id}")
+            _mount_wire_error(f"[connection_dropped] last_seen={exc.last_seen_sse_id}")
         except MalformedSseId as exc:
-            log.write(f"[malformed_sse_id] raw={exc.raw!r}")
+            self._audit(f"malformed_sse_id raw={exc.raw!r}")
+            _mount_wire_error(f"[malformed_sse_id] raw={exc.raw!r}")
         except MalformedSseData as exc:
-            log.write(f"[malformed_sse_data] raw={exc.raw!r}")
+            self._audit(f"malformed_sse_data raw={exc.raw!r:.120}")
+            _mount_wire_error(f"[malformed_sse_data] raw={exc.raw!r}")
         except TurnIdFlip as exc:
-            log.write(f"[turn_id_flip] expected={exc.established} got={exc.got}")
+            self._audit(f"turn_id_flip expected={exc.established} got={exc.got}")
+            _mount_wire_error(f"[turn_id_flip] expected={exc.established} got={exc.got}")
         finally:
-            self.state = "idle"
+            self._transition("idle", "worker_finally")
             self.active_turn_id = None
             self._set_hint(self.HINT_IDLE)
 
@@ -840,26 +1097,35 @@ class RatatoskrApp(App[int]):
         """Two-stage Ctrl-C state machine per INV-003."""
         assert self.state in ("idle", "streaming", "cancelling")
         if self.state == "idle":
+            self._audit("ctrl_c state=idle action=exit code=0")
             self.exit(0)
         elif self.state == "streaming":
             if self.active_turn_id is None:
+                self._audit("ctrl_c state=streaming active_turn_id=None action=force_exit code=3")
                 if self.stream_worker is not None:
                     self.stream_worker.cancel()
                 self.exit(3)
                 return
-            self.state = "cancelling"
+            self._audit(f"ctrl_c state=streaming turn_id={self.active_turn_id} action=cancel_post")
+            self._transition("cancelling", "ctrl_c_cancel_post_issued")
             self._set_hint(self.HINT_CANCELLING)
-            log = self.query_one("#transcript", RichLog)
+            transcript = self.query_one("#transcript-scroll", VerticalScroll)
             self.run_worker(
-                _cancel_via_sse(self.client, self.session_id, self.active_turn_id, log=log)
+                _cancel_via_sse(
+                    self.client, self.session_id, self.active_turn_id,
+                    transcript=transcript,
+                    audit=self._audit,
+                )
             )
         elif self.state == "cancelling":
+            self._audit("ctrl_c state=cancelling action=force_exit code=3")
             if self.stream_worker is not None:
                 self.stream_worker.cancel()
             self.exit(3)
 
     def action_quit(self) -> None:
         """Ctrl-D — immediate exit regardless of state."""
+        self._audit(f"ctrl_d state={self.state} action=exit code=0")
         if self.stream_worker is not None and not self.stream_worker.is_finished:
             self.stream_worker.cancel()
         self.exit(0)
@@ -1000,12 +1266,33 @@ async def _cancel_via_sse(
     session_id: str,
     turn_id: int,
     *,
-    log: RichLog,
+    transcript: VerticalScroll,
+    audit: "Callable[[str], None] | None" = None,
 ) -> None:
-    """Fire-and-forget cancel; never raises (mirrors cli._cancel_and_log; #3 INV-009)."""
+    """Fire-and-forget cancel; never raises (mirrors cli._cancel_and_log; #3 INV-009).
+
+    v0.9.0: mounts a `[cancel_failed]` Static into the transcript-scroll
+    container on failure (was log.write to RichLog).
+    v0.10.0: optional `audit` callback (RatatoskrApp._audit) receives one
+    line on POST issue + one on POST result, so the debug pane carries the
+    full cancel lifecycle. Defaults to no-op for legacy callers.
+    """
     assert client is not None
     assert isinstance(turn_id, int) and turn_id > 0
+    if audit is not None:
+        audit(f"cancel_post issued session_id={session_id} turn_id={turn_id}")
     try:
         await cancel_turn(client, session_id, turn_id)
+        if audit is not None:
+            audit(f"cancel_post ok turn_id={turn_id}")
     except (CancelFailed, CancelTurnNotFound, CancelAlreadyCompleted, httpx.RequestError) as exc:
-        log.write(f"[cancel_failed] {type(exc).__name__}: {exc}")
+        if audit is not None:
+            audit(f"cancel_post failed turn_id={turn_id} {type(exc).__name__}: {exc!s:.120}")
+        try:
+            transcript.mount(Static(
+                f"[cancel_failed] {type(exc).__name__}: {exc}",
+                classes="error-label",
+            ))
+            transcript.scroll_end(animate=False)
+        except Exception:
+            pass

tests/test_sse_client.py

@@ -5,6 +5,7 @@ import pytest
 import respx
 
 from ratatoskr.sse_client import (
+    AffectUpdate,
     CancelAlreadyCompleted,
     Cancelled,
     CancelResult,
@@ -877,3 +878,80 @@ class TestEmptyDataSkipped:
         assert exc_info.value.raw == "x" * 200
         # Exception message also only contains the truncated form
         assert "x" * 5000 not in str(exc_info.value)
+
+
+class TestAffectUpdate:
+    """Worldtree #204 / v0.28.0 — persona-state observability SSE event.
+
+    Two emissions per qualifying turn (persona-enabled agent, non-ephemeral
+    session): `status: "current"` at turn start with full snapshot, then
+    `status: "scheduled"` near turn end (lightweight, no snapshot).
+
+    See docs/conversation-api-spec.md § affect_update.
+    """
+
+    @respx.mock
+    async def test_current_status_parsed_with_snapshot(self) -> None:
+        """current_status_parsed_with_snapshot [tracer]: status=current carries
+        the full snapshot dict; AffectUpdate.snapshot is populated with the
+        nested PAD / dominant_emotion / emotions_active fields.
+        """
+        snapshot = {
+            "agent_id": "mimir",
+            "pad": {"pleasure": 0.52, "arousal": 0.47, "dominance": 0.50},
+            "dominant_emotion": "curiosity",
+            "emotions_active": [
+                {"type": "curiosity", "intensity": 0.6, "decay_remaining_s": 202.7}
+            ],
+            "baseline_pad": {"pleasure": 0.50, "arousal": 0.40, "dominance": 0.50},
+            "mood_drift": {"valence_delta": 0.02, "arousal_delta": 0.07},
+            "last_updated_at": "2026-05-25T22:30:18+00:00",
+        }
+        stream = _sse_chunk(
+            "42:1",
+            {
+                "type": "affect_update",
+                "status": "current",
+                "turn_id": 42,
+                "snapshot": snapshot,
+            },
+        ) + _sse_chunk("42:2", _DONE_42_6)
+        respx.post("https://w.example/sessions/s1/messages").mock(
+            return_value=httpx.Response(
+                200, headers={"content-type": "text/event-stream"}, content=stream
+            )
+        )
+        async with httpx.AsyncClient(base_url="https://w.example") as client:
+            events = [e async for e in stream_turn(client, "s1", "hi")]
+        affect = events[0]
+        assert isinstance(affect, AffectUpdate)
+        assert affect.status == "current"
+        assert affect.turn_id == 42
+        assert affect.snapshot == snapshot
+        assert affect.sse_id == SseId(42, 1)
+
+    @respx.mock
+    async def test_scheduled_status_parsed_no_snapshot(self) -> None:
+        """scheduled_status_parsed_no_snapshot [trace]: status=scheduled carries
+        no snapshot field; AffectUpdate.snapshot is None.
+        """
+        stream = (
+            _sse_chunk("42:1", {"type": "text", "content": "x"})
+            + _sse_chunk(
+                "42:2",
+                {"type": "affect_update", "status": "scheduled", "turn_id": 42},
+            )
+            + _sse_chunk("42:3", _DONE_42_6)
+        )
+        respx.post("https://w.example/sessions/s1/messages").mock(
+            return_value=httpx.Response(
+                200, headers={"content-type": "text/event-stream"}, content=stream
+            )
+        )
+        async with httpx.AsyncClient(base_url="https://w.example") as client:
+            events = [e async for e in stream_turn(client, "s1", "hi")]
+        affect = next(e for e in events if isinstance(e, AffectUpdate))
+        assert affect.status == "scheduled"
+        assert affect.turn_id == 42
+        assert affect.snapshot is None
+        assert affect.sse_id == SseId(42, 2)

tests/test_tui.py

@@ -61,20 +61,43 @@ def _args_existing(session_id: str = "s-1existing", **overrides) -> ParsedArgs:
 
 
 def _spy_writes(monkeypatch) -> list:
-    """Patch RichLog.write to record every arg into a list (returned).
+    """Patch RichLog.write AND VerticalScroll.mount to record every renderable
+    or mounted-widget content into a single list (returned).
 
-    Accepts *args/**kwargs so Textual's internal deferred-render path
-    (which calls write positionally with width/expand/shrink/scroll_end)
-    still works after a write-during-mount + Resize sequence.
+    v0.9.0: transcript content is mounted into a VerticalScroll, not written
+    to a RichLog. The spy captures both shapes — for each mounted Static, the
+    Static's `renderable` (Markdown / RichText / str) lands in the list,
+    indistinguishably from RichLog.write entries. Integration tests assert
+    on substrings or types in `writes` so the merged shape is the right
+    abstraction.
+
+    Accepts *args/**kwargs so Textual's internal deferred-render paths still
+    work after a write-during-mount + Resize sequence.
     """
+    from textual.containers import VerticalScroll
+    from textual.widgets import Static
+
     writes: list = []
-    original = RichLog.write
 
-    def spy(self, content, *args, **kw):
+    original_write = RichLog.write
+
+    def spy_write(self, content, *args, **kw):
         writes.append(content)
-        return original(self, content, *args, **kw)
+        return original_write(self, content, *args, **kw)
 
-    monkeypatch.setattr(RichLog, "write", spy)
+    monkeypatch.setattr(RichLog, "write", spy_write)
+
+    original_mount = VerticalScroll.mount
+
+    def spy_mount(self, *children, **kw):
+        for child in children:
+            if isinstance(child, Static):
+                writes.append(child.content)
+            else:
+                writes.append(child)
+        return original_mount(self, *children, **kw)
+
+    monkeypatch.setattr(VerticalScroll, "mount", spy_mount)
     return writes
 
 
@@ -126,13 +149,13 @@ class TestTuiPresenterState:
 
         from ratatoskr.tui import TuiPresenterState
 
-        log = MagicMock()
+        transcript = MagicMock()
         thinking_log = MagicMock()
         state = TuiPresenterState()
         for chunk in ("Let", " me", " think"):
             state.render(
                 Thinking(sse_id=SID, content=chunk),
-                log=log,
+                transcript=transcript,
                 tools_log=MagicMock(),
                 debug_log=MagicMock(),
                 thinking_log=thinking_log,
@@ -143,7 +166,7 @@ class TestTuiPresenterState:
         assert len(writes) == 1
         assert isinstance(writes[0], Rule)
         assert state.thinking_chunk_buffer == "Let me think"
-        assert log.write.call_count == 0
+        assert transcript.mount.call_count == 0
 
     def test_thinking_flushes_on_newline(self) -> None:
         """thinking_flushes_on_newline [happy, v0.7.1]:
@@ -156,7 +179,7 @@ class TestTuiPresenterState:
         for chunk in ("Hello", " world", "\n"):
             state.render(
                 Thinking(sse_id=SID, content=chunk),
-                log=MagicMock(),
+                transcript=MagicMock(),
                 tools_log=MagicMock(),
                 debug_log=MagicMock(),
                 thinking_log=thinking_log,
@@ -178,14 +201,14 @@ class TestTuiPresenterState:
 
         from ratatoskr.tui import TuiPresenterState
 
-        log = MagicMock()
+        transcript = MagicMock()
         debug_log = MagicMock()
         thinking_log = MagicMock()
         state = TuiPresenterState()
         for content in ("a", "b"):
             state.render(
                 Thinking(sse_id=SID, content=content),
-                log=log,
+                transcript=transcript,
                 tools_log=MagicMock(),
                 debug_log=debug_log,
                 thinking_log=thinking_log,
@@ -193,7 +216,7 @@ class TestTuiPresenterState:
             )
         state.render(
             WorkerPhase(sse_id=SID, phase="streaming", turn_id=42),
-            log=log,
+            transcript=transcript,
             tools_log=MagicMock(),
             debug_log=debug_log,
             thinking_log=thinking_log,
@@ -207,7 +230,7 @@ class TestTuiPresenterState:
         assert isinstance(thinking_writes[2], Rule)
         # worker_phase still goes to debug_log; transcript untouched.
         assert "· worker_phase:" in _text_of(debug_log.write.call_args_list[-1][0][0])
-        assert not log.write.called
+        assert not transcript.mount.called
 
     # v0.6.5: thinking-current Static removed; test_thinking_widget_truncation
     # and test_thinking_widget_visibility_lifecycle deleted (no longer apply).
@@ -224,7 +247,7 @@ class TestTuiPresenterState:
 
         from ratatoskr.tui import TuiPresenterState
 
-        log = MagicMock()
+        transcript = MagicMock()
         thinking_log = MagicMock()
         state = TuiPresenterState()
         for evt in (
@@ -233,13 +256,13 @@ class TestTuiPresenterState:
             Thinking(sse_id=SID, content="second"),
         ):
             state.render(
-                evt, log=log,
+                evt, transcript=transcript,
                 tools_log=MagicMock(), debug_log=MagicMock(),
                 thinking_log=thinking_log, raw=False,
             )
         state.render(
             _make_tui_done(),
-            log=log,
+            transcript=transcript,
             tools_log=MagicMock(), debug_log=MagicMock(),
             thinking_log=thinking_log, raw=False,
         )
@@ -251,9 +274,9 @@ class TestTuiPresenterState:
         assert "first" in delta_strs
         assert "second" in delta_strs
         # v0.8.1: Text "hi" flushes as a line in transcript on Done.
-        log_writes = [_text_of(c[0][0]) for c in log.write.call_args_list]
-        assert "hi" in log_writes
-        assert any(w.startswith("[done]") for w in log_writes if isinstance(w, str))
+        transcript_renderables = [_text_of(r) for r in _mounted_renderables(transcript)]
+        assert "hi" in transcript_renderables
+        assert any(w.startswith("[done]") for w in transcript_renderables if isinstance(w, str))
 
     def test_render_exception_fallback(self) -> None:
         """render_exception_fallback [adversarial, v0.6.5]:
@@ -263,7 +286,7 @@ class TestTuiPresenterState:
         """
         from ratatoskr.tui import TuiPresenterState
 
-        log = MagicMock()
+        transcript = MagicMock()
         thinking_log = MagicMock()
         # First call (Rule write) raises; subsequent calls succeed for fallback.
         thinking_log.write.side_effect = [
@@ -274,7 +297,7 @@ class TestTuiPresenterState:
         state = TuiPresenterState()
         state.render(
             Thinking(sse_id=SID, content="x"),
-            log=log,
+            transcript=transcript,
             tools_log=MagicMock(),
             debug_log=MagicMock(),
             thinking_log=thinking_log,
@@ -284,7 +307,7 @@ class TestTuiPresenterState:
         assert any(w.startswith("[thinking]") for w in writes), writes
         assert any(w == "[render_error] AttributeError" for w in writes), writes
         assert not any("rule write failed" in w for w in writes), writes
-        assert not log.write.called
+        assert not transcript.mount.called
 
     def test_state_reset_per_worker(self) -> None:
         """state_reset_per_worker [trace]: fresh TuiPresenterState() starts no thinking open."""
@@ -293,7 +316,7 @@ class TestTuiPresenterState:
         s1 = TuiPresenterState()
         s1.render(
             Thinking(sse_id=SID, content="x"),
-            log=MagicMock(),
+            transcript=MagicMock(),
             tools_log=MagicMock(),
             debug_log=MagicMock(),
             thinking_log=MagicMock(),
@@ -310,12 +333,12 @@ class TestTuiPresenterState:
         """
         from ratatoskr.tui import TuiPresenterState
 
-        log = MagicMock()
+        transcript = MagicMock()
         thinking_log = MagicMock()
         state = TuiPresenterState()
         state.render(
             Thinking(sse_id=SID, content="partial"),
-            log=log,
+            transcript=transcript,
             tools_log=MagicMock(),
             debug_log=MagicMock(), thinking_log=thinking_log, raw=False,
         )
@@ -323,80 +346,88 @@ class TestTuiPresenterState:
             Cancelled(
                 sse_id=SID, phase="cancelled", turn_id=42, reason="user", partial_message_id=None
             ),
-            log=log,
+            transcript=transcript,
             tools_log=MagicMock(),
             debug_log=MagicMock(), thinking_log=thinking_log, raw=False,
         )
         # v0.6.5: streamed thinking + Rule(end) in thinking_log; [cancelled] in transcript.
-        log_writes = [_text_of(c[0][0]) for c in log.write.call_args_list]
-        assert any(w.startswith("[cancelled]") for w in log_writes)
+        transcript_renderables = [_text_of(r) for r in _mounted_renderables(transcript)]
+        assert any(w.startswith("[cancelled]") for w in transcript_renderables)
         # thinking_log got at least Rule(start) + "partial" delta + Rule(end)
         assert thinking_log.write.call_count >= 3
 
-    def test_done_renders_markdown_after_label(self) -> None:
-        """done_renders_markdown_after_label [happy, v0.8.1]:
-        Text("hi") buffers in text_chunk_buffer (no `\\n`). Done flushes
-        "hi" as a tail line in transcript, then writes [done] + Rule +
-        Markdown body (non-raw).
+    def test_text_then_done_mounts_widget_and_finalizes(self) -> None:
+        """text_then_done_mounts_widget_and_finalizes [happy, v0.9.0]:
+        First Text delta mounts a Static(Markdown(buffer)) into the transcript;
+        Done finalizes the widget reference and mounts a styled [done] label.
+        No duplicate content (v0.9.0 replaces v0.8.x's flush-on-Done with
+        live in-place Markdown updates).
         """
         from rich.markdown import Markdown
-        from rich.rule import Rule
 
         from ratatoskr.tui import TuiPresenterState
 
-        log = MagicMock()
+        transcript = MagicMock()
         state = TuiPresenterState()
         state.render(
             Text(sse_id=SID, content="hi"),
-            log=log,
+            transcript=transcript,
             tools_log=MagicMock(),
             debug_log=MagicMock(),
             thinking_log=MagicMock(),
             raw=False,
         )
-        # v0.8.1: Text "hi" stays buffered (no `\n` yet) — no log write yet.
-        assert not log.write.called
+        # v0.9.0: response widget mounted on first Text delta with Markdown wrapper.
+        assert transcript.mount.called
+        first_widget = transcript.mount.call_args_list[0][0][0]
+        assert isinstance(first_widget.content, Markdown)
+        assert first_widget.content.markup == "hi"
         assert state.text_chunk_buffer == "hi"
+        # Done finalizes: text_chunk_buffer cleared, widget ref released, label mounted.
         state.render(
             _make_tui_done(),
-            log=log,
+            transcript=transcript,
             tools_log=MagicMock(),
             debug_log=MagicMock(),
             thinking_log=MagicMock(),
             raw=False,
         )
-        # On Done: tail flush + [done] + Rule + Markdown body.
-        writes = [c[0][0] for c in log.write.call_args_list]
-        assert "hi" in writes
+        writes = _mounted_renderables(transcript)
         assert any(_text_of(w).startswith("[done]") for w in writes)
-        assert any(isinstance(w, Rule) for w in writes)
-        assert any(isinstance(w, Markdown) for w in writes)
+        # v0.9.0: response Markdown rendered live during stream — only ONE
+        # Markdown renderable lands in the transcript (no post-Done re-render).
+        markdowns = [w for w in writes if isinstance(w, Markdown)]
+        assert len(markdowns) == 1
         assert state.text_chunk_buffer == ""
+        assert state.current_response_widget is None
 
     def test_raw_flag_skips_markdown(self) -> None:
-        """raw_flag_skips_markdown [trace]: raw=True → no Rule, no Markdown."""
+        """raw_flag_skips_markdown [v0.9.0]: raw=True → response widget holds
+        plain str instead of Markdown. Live in-place update still happens;
+        only the wrapper differs.
+        """
         from rich.markdown import Markdown
-        from rich.rule import Rule
 
         from ratatoskr.tui import TuiPresenterState
 
-        log = MagicMock()
+        transcript = MagicMock()
         state = TuiPresenterState()
         state.render(
             Text(sse_id=SID, content="hi"),
-            log=log,
+            transcript=transcript,
             tools_log=MagicMock(),
             debug_log=MagicMock(), thinking_log=MagicMock(), raw=True,
         )
         state.render(
             _make_tui_done(),
-            log=log,
+            transcript=transcript,
             tools_log=MagicMock(),
             debug_log=MagicMock(), thinking_log=MagicMock(), raw=True,
         )
-        writes = [c[0][0] for c in log.write.call_args_list]
-        assert not any(isinstance(w, Rule) for w in writes)
+        writes = _mounted_renderables(transcript)
+        # Raw mode bypasses Markdown entirely — content lives as plain str.
         assert not any(isinstance(w, Markdown) for w in writes)
+        assert "hi" in writes
 
     def test_worker_phase_demoted_to_debug_log(self) -> None:
         """worker_phase_demoted_to_debug_log [trace, v0.5.0]: WorkerPhase → debug_log
@@ -407,17 +438,17 @@ class TestTuiPresenterState:
 
         from ratatoskr.tui import TuiPresenterState
 
-        log = MagicMock()
+        transcript = MagicMock()
         debug_log = MagicMock()
         state = TuiPresenterState()
         state.render(
             WorkerPhase(sse_id=SID, phase="streaming", turn_id=42),
-            log=log,
+            transcript=transcript,
             tools_log=MagicMock(),
             debug_log=debug_log, thinking_log=MagicMock(), raw=False,
         )
         # v0.5.0: WorkerPhase routes to debug_log, NOT transcript.
-        assert not log.write.called
+        assert not transcript.mount.called
         renderable = debug_log.write.call_args[0][0]
         # INV-003: must be a styled Rich Text renderable, not a plain str.
         # v0.4.1 retheme: style is now Australis Sea dark-60 ("#86929d") instead
@@ -442,12 +473,12 @@ class TestTuiPresenterState:
         """
         from ratatoskr.tui import TuiPresenterState
 
-        log = MagicMock()
+        transcript = MagicMock()
         tools_log = MagicMock()
         state = TuiPresenterState()
         state.render(
             ToolStart(sse_id=SID, name="read_file", arguments={"path": "/x"}),
-            log=log,
+            transcript=transcript,
             tools_log=tools_log,
             debug_log=MagicMock(), thinking_log=MagicMock(), raw=False,
         )
@@ -455,85 +486,95 @@ class TestTuiPresenterState:
         assert tools_log.write.called
         assert _text_of(tools_log.write.call_args[0][0]).startswith("· tool_start:")
         # INV-014: transcript was NOT written to
-        assert not log.write.called
+        assert not transcript.mount.called
 
     def test_tool_result_routes_to_tools_log(self) -> None:
         """tool_result_routes_to_tools_log [INV-014]: ToolResult → tools_log, NOT transcript."""
         from ratatoskr.tui import TuiPresenterState
 
-        log = MagicMock()
+        transcript = MagicMock()
         tools_log = MagicMock()
         state = TuiPresenterState()
         state.render(
             ToolResult(sse_id=SID, name="read_file", result="ok", duration_ms=12),
-            log=log,
+            transcript=transcript,
             tools_log=tools_log,
             debug_log=MagicMock(), thinking_log=MagicMock(), raw=False,
         )
         assert tools_log.write.called
         assert _text_of(tools_log.write.call_args[0][0]).startswith("· tool_result:")
-        assert not log.write.called
+        assert not transcript.mount.called
 
-    def test_text_event_buffers_until_newline(self) -> None:
-        """text_event_buffers_until_newline [v0.8.1]: Text deltas without
-        `\\n` accumulate in text_chunk_buffer; no log write yet.
+    def test_text_first_delta_mounts_response_widget(self) -> None:
+        """text_first_delta_mounts_response_widget [v0.9.0]: first Text delta
+        mounts a Static carrying Markdown(buffer) into the transcript. The
+        text_chunk_buffer holds the accumulated content for the next delta's
+        in-place update.
         """
+        from rich.markdown import Markdown
+
         from ratatoskr.tui import TuiPresenterState
 
-        log = MagicMock()
+        transcript = MagicMock()
         tools_log = MagicMock()
         state = TuiPresenterState()
         state.render(
             Text(sse_id=SID, content="hello"),
-            log=log,
+            transcript=transcript,
             tools_log=tools_log,
             debug_log=MagicMock(),
             thinking_log=MagicMock(),
             raw=False,
         )
-        # v0.8.1: buffered, not written until `\n` or Done.
         assert state.text_chunk_buffer == "hello"
-        assert not log.write.called
+        assert transcript.mount.call_count == 1
+        widget = transcript.mount.call_args[0][0]
+        assert isinstance(widget.content, Markdown)
+        assert widget.content.markup == "hello"
+        assert state.current_response_widget is widget
         assert not tools_log.write.called
 
-    def test_text_flushes_on_newline(self) -> None:
-        """text_flushes_on_newline [v0.8.1]: a delta carrying `\\n` flushes
-        the accumulated buffer as ONE line to log (transcript).
+    def test_text_subsequent_deltas_update_in_place(self) -> None:
+        """text_subsequent_deltas_update_in_place [v0.9.0]: deltas after the
+        first do NOT mount a new widget — they update the existing widget's
+        Markdown content in place. The text_chunk_buffer accumulates.
         """
         from ratatoskr.tui import TuiPresenterState
 
-        log = MagicMock()
+        transcript = MagicMock()
         state = TuiPresenterState()
-        for tok in ("Hel", "lo", " ", "world", "\n"):
+        for tok in ("Hel", "lo", " ", "world"):
             state.render(
                 Text(sse_id=SID, content=tok),
-                log=log,
+                transcript=transcript,
                 tools_log=MagicMock(),
                 debug_log=MagicMock(),
                 thinking_log=MagicMock(),
                 raw=False,
             )
-        writes = [c[0][0] for c in log.write.call_args_list]
-        # "Hello world" coalesces to ONE log entry.
-        assert writes == ["Hello world"]
-        assert state.text_chunk_buffer == ""
+        # Exactly ONE mount (the first delta); subsequent deltas update.
+        assert transcript.mount.call_count == 1
+        assert state.text_chunk_buffer == "Hello world"
+        # Widget reference held; buffer is the source of truth re-rendered
+        # into Markdown(...) for each Static.update call.
+        assert state.current_response_widget is not None
 
     def test_duration_format_seconds(self) -> None:
         """duration_format_seconds [trace]: Done(duration_ms=5467) → label has "duration=5.5s"."""
         from ratatoskr.tui import TuiPresenterState
 
-        log = MagicMock()
+        transcript = MagicMock()
         state = TuiPresenterState()
         state.render(
             _make_tui_done(duration_ms=5467),
-            log=log,
+            transcript=transcript,
             tools_log=MagicMock(),
             debug_log=MagicMock(), thinking_log=MagicMock(), raw=True,
         )
         done_line = next(
-            _text_of(c[0][0])
-            for c in log.write.call_args_list
-            if _text_of(c[0][0]).startswith("[done]")
+            _text_of(r)
+            for r in _mounted_renderables(transcript)
+            if _text_of(r).startswith("[done]")
         )
         assert "duration=5.5s" in done_line
         assert "duration_ms=5467" not in done_line
@@ -542,7 +583,7 @@ class TestTuiPresenterState:
         """usage_format_unicode_arrow [trace]: TUI Done label uses → (Unicode), not -> (ASCII)."""
         from ratatoskr.tui import TuiPresenterState
 
-        log = MagicMock()
+        transcript = MagicMock()
         state = TuiPresenterState()
         usage = {
             "prompt_tokens": 6756,
@@ -552,32 +593,233 @@ class TestTuiPresenterState:
         }
         state.render(
             _make_tui_done(usage=usage),
-            log=log,
+            transcript=transcript,
             tools_log=MagicMock(),
             debug_log=MagicMock(), thinking_log=MagicMock(), raw=True,
         )
         done_line = next(
-            _text_of(c[0][0])
-            for c in log.write.call_args_list
-            if _text_of(c[0][0]).startswith("[done]")
+            _text_of(r)
+            for r in _mounted_renderables(transcript)
+            if _text_of(r).startswith("[done]")
         )
         assert "usage 6756 in → 126 out (6882 total, 0 cached)" in done_line
 
 
+class TestPresenterAuditLogging:
+    """v0.10.0 — per-event audit lines + turn-summary in the debug pane.
+
+    The presenter emits one debug-pane line per arriving event (Text and
+    Thinking are aggregated into the turn-summary instead of per-delta to
+    avoid drowning the pane at token rate).
+    """
+
+    def test_worker_phase_emits_audit_line(self) -> None:
+        """worker_phase_emits_audit_line: WorkerPhase arrival adds an audit
+        line to debug_log alongside the existing `· worker_phase:` entry.
+        Audit line shape: `[HH:MM:SS.fff] workerphase sse_id=N:M …`.
+        """
+        from ratatoskr.tui import TuiPresenterState
+
+        debug_log = MagicMock()
+        state = TuiPresenterState()
+        state.render(
+            WorkerPhase(sse_id=SID, phase="streaming", turn_id=42),
+            transcript=MagicMock(),
+            tools_log=MagicMock(),
+            debug_log=debug_log,
+            thinking_log=MagicMock(),
+            raw=False,
+        )
+        # Two writes: audit line + worker_phase telemetry.
+        assert debug_log.write.call_count == 2
+        audit_line = _text_of(debug_log.write.call_args_list[0][0][0])
+        assert "workerphase" in audit_line
+        assert "sse_id=42:5" in audit_line
+        assert "phase=streaming" in audit_line
+
+    def test_tool_start_emits_audit_line(self) -> None:
+        """tool_start_emits_audit_line: ToolStart adds one audit line to
+        debug_log even though the tool event itself routes to tools_log.
+        """
+        from ratatoskr.tui import TuiPresenterState
+
+        debug_log = MagicMock()
+        state = TuiPresenterState()
+        state.render(
+            ToolStart(sse_id=SID, name="read_file", arguments={"path": "/x"}),
+            transcript=MagicMock(),
+            tools_log=MagicMock(),
+            debug_log=debug_log,
+            thinking_log=MagicMock(),
+            raw=False,
+        )
+        assert debug_log.write.call_count == 1
+        audit_line = _text_of(debug_log.write.call_args[0][0])
+        assert "toolstart" in audit_line
+        assert "sse_id=42:5" in audit_line
+        assert "name=read_file" in audit_line
+
+    def test_text_delta_counted_not_per_event_audit_line(self) -> None:
+        """text_delta_counted_not_per_event_audit_line: a Text delta does
+        NOT emit a per-event audit line (token-rate would drown the pane);
+        instead it bumps text_delta_count / text_byte_count for the turn-
+        summary at Done.
+        """
+        from ratatoskr.tui import TuiPresenterState
+
+        debug_log = MagicMock()
+        state = TuiPresenterState()
+        state.render(
+            Text(sse_id=SID, content="hello world"),
+            transcript=MagicMock(),
+            tools_log=MagicMock(),
+            debug_log=debug_log,
+            thinking_log=MagicMock(),
+            raw=False,
+        )
+        # No debug-pane writes — text deltas are silent at token rate.
+        assert not debug_log.write.called
+        assert state.text_delta_count == 1
+        assert state.text_byte_count == len("hello world")
+
+    def test_affect_update_routes_to_audit_only(self) -> None:
+        """affect_update_routes_to_audit_only [v0.11.0]: AffectUpdate emits ONE
+        debug-pane audit line (with dominant_emotion + PAD for status=current)
+        and touches NO other pane (no transcript mount, no tools_log, no
+        thinking_log). UX shape (persona pane / sticky header) is deferred.
+        """
+        from ratatoskr.sse_client import AffectUpdate
+        from ratatoskr.tui import TuiPresenterState
+
+        transcript = MagicMock()
+        tools_log = MagicMock()
+        thinking_log = MagicMock()
+        debug_log = MagicMock()
+        state = TuiPresenterState()
+        snapshot = {
+            "agent_id": "mimir",
+            "pad": {"pleasure": 0.5, "arousal": 0.4, "dominance": 0.5},
+            "dominant_emotion": "curiosity",
+        }
+        state.render(
+            AffectUpdate(sse_id=SID, status="current", turn_id=42, snapshot=snapshot),
+            transcript=transcript,
+            tools_log=tools_log,
+            debug_log=debug_log,
+            thinking_log=thinking_log,
+            raw=False,
+        )
+        assert debug_log.write.call_count == 1
+        audit = _text_of(debug_log.write.call_args[0][0])
+        assert "affectupdate" in audit
+        assert "status=current" in audit
+        assert "dominant_emotion='curiosity'" in audit
+        assert "pad=(0.5,0.4,0.5)" in audit
+        assert not transcript.mount.called
+        assert not tools_log.write.called
+        assert not thinking_log.write.called
+
+    def test_affect_update_scheduled_has_no_pad_detail(self) -> None:
+        """affect_update_scheduled_has_no_pad_detail [v0.11.0]: status=scheduled
+        carries no snapshot — the audit line omits dominant_emotion / pad and
+        contains only status + turn_id.
+        """
+        from ratatoskr.sse_client import AffectUpdate
+        from ratatoskr.tui import TuiPresenterState
+
+        debug_log = MagicMock()
+        state = TuiPresenterState()
+        state.render(
+            AffectUpdate(sse_id=SID, status="scheduled", turn_id=42, snapshot=None),
+            transcript=MagicMock(),
+            tools_log=MagicMock(),
+            debug_log=debug_log,
+            thinking_log=MagicMock(),
+            raw=False,
+        )
+        audit = _text_of(debug_log.write.call_args[0][0])
+        assert "status=scheduled" in audit
+        assert "turn_id=42" in audit
+        assert "dominant_emotion" not in audit
+        assert "pad=" not in audit
+
+    def test_done_emits_turn_summary_line(self) -> None:
+        """done_emits_turn_summary_line: when Done arrives the presenter
+        emits a `turn_summary` line aggregating per-delta Text + Thinking
+        counters. The shape exposes the totals that per-event audit lines
+        elided.
+        """
+        from ratatoskr.tui import TuiPresenterState
+
+        debug_log = MagicMock()
+        state = TuiPresenterState()
+        # 3 Text deltas + 2 Thinking deltas, then Done.
+        state.render(
+            Text(sse_id=SID, content="a"),
+            transcript=MagicMock(), tools_log=MagicMock(),
+            debug_log=debug_log, thinking_log=MagicMock(), raw=False,
+        )
+        state.render(
+            Text(sse_id=SID, content="bc"),
+            transcript=MagicMock(), tools_log=MagicMock(),
+            debug_log=debug_log, thinking_log=MagicMock(), raw=False,
+        )
+        state.render(
+            Thinking(sse_id=SID, content="thought\n"),
+            transcript=MagicMock(), tools_log=MagicMock(),
+            debug_log=debug_log, thinking_log=MagicMock(), raw=False,
+        )
+        state.render(
+            _make_tui_done(),
+            transcript=MagicMock(), tools_log=MagicMock(),
+            debug_log=debug_log, thinking_log=MagicMock(), raw=False,
+        )
+        writes = [_text_of(c[0][0]) for c in debug_log.write.call_args_list]
+        summary = next(w for w in writes if "turn_summary" in w)
+        assert "text_deltas=2" in summary
+        assert "text_bytes=3" in summary  # "a" + "bc"
+        assert "thinking_deltas=1" in summary
+        assert "elapsed_ms=" in summary
+
+
 def _text_of(write_arg: object) -> str:
     """Extract plain text from a RichLog.write() arg (str or rich.text.Text).
 
     Issue #12 wraps demoted-telemetry entries in `rich.text.Text(..., style="dim")`
     so the RichLog can apply dim styling; non-demoted writes stay as plain str.
     Tests that want to assert against content need both shapes flattened.
+
+    v0.9.0: also extracts plain text from Markdown wrappers (the streaming-text
+    response path uses Markdown(buffer) now; tests assert against the source
+    markup, which lives in `Markdown.markup`).
     """
+    from rich.markdown import Markdown
     from rich.text import Text as RichText
 
     if isinstance(write_arg, RichText):
         return write_arg.plain
+    if isinstance(write_arg, Markdown):
+        return write_arg.markup
     if isinstance(write_arg, str):
         return write_arg
-    return ""  # Markdown / Rule / etc. — not text content
+    return ""  # Rule / etc. — not text content
+
+
+def _mounted_renderables(transcript_mock: MagicMock) -> list:
+    """v0.9.0: TuiPresenterState now mounts Static widgets into the transcript
+    VerticalScroll instead of writing renderables to a RichLog. Tests using a
+    MagicMock transcript inspect `transcript.mount.call_args_list`; each call's
+    first positional arg is the Static child whose `.content` carries the
+    Markdown / RichText / str that pre-v0.9.0 would have been the write arg.
+    Returns those renderables in mount-call order so tests can assert on them
+    with the same shape they used for `log.write.call_args_list` previously.
+    """
+    out: list = []
+    for call in transcript_mock.mount.call_args_list:
+        for child in call.args:
+            renderable = getattr(child, "content", child)
+            out.append(renderable)
+    return out
 
 
 def _make_tui_done(*, duration_ms: int = 1, usage: dict[str, int] | None = None) -> Done:
@@ -601,15 +843,15 @@ def _make_tui_done(*, duration_ms: int = 1, usage: dict[str, int] | None = None)
 class TestCancelViaSse:
     @respx.mock
     async def test_happy_cancel(self) -> None:
-        """happy_cancel [happy,tracer]: 200 OK → returns None; log has no [cancel_failed]."""
+        """happy_cancel [happy,tracer]: 200 OK → returns None; transcript has no [cancel_failed]."""
         respx.post("https://w.example/sessions/s-1/turns/42/cancel").mock(
             return_value=httpx.Response(200, json=_CANCEL_OK_RESP)
         )
-        log = MagicMock()
+        transcript = MagicMock()
         async with httpx.AsyncClient(base_url="https://w.example") as client:
-            result = await _cancel_via_sse(client, "s-1", 42, log=log)
+            result = await _cancel_via_sse(client, "s-1", 42, transcript=transcript)
         assert result is None
-        log.write.assert_not_called()
+        transcript.mount.assert_not_called()
 
     @respx.mock
     async def test_cancel_failed_500(self) -> None:
@@ -617,10 +859,10 @@ class TestCancelViaSse:
         respx.post("https://w.example/sessions/s-1/turns/42/cancel").mock(
             return_value=httpx.Response(500, content=b"boom")
         )
-        log = MagicMock()
+        transcript = MagicMock()
         async with httpx.AsyncClient(base_url="https://w.example") as client:
-            await _cancel_via_sse(client, "s-1", 42, log=log)
-        line = log.write.call_args[0][0]
+            await _cancel_via_sse(client, "s-1", 42, transcript=transcript)
+        line = transcript.mount.call_args[0][0].content
         assert "[cancel_failed]" in line
         assert "CancelFailed" in line
 
@@ -630,10 +872,10 @@ class TestCancelViaSse:
         respx.post("https://w.example/sessions/s-1/turns/42/cancel").mock(
             return_value=httpx.Response(409)
         )
-        log = MagicMock()
+        transcript = MagicMock()
         async with httpx.AsyncClient(base_url="https://w.example") as client:
-            await _cancel_via_sse(client, "s-1", 42, log=log)
-        line = log.write.call_args[0][0]
+            await _cancel_via_sse(client, "s-1", 42, transcript=transcript)
+        line = transcript.mount.call_args[0][0].content
         assert "[cancel_failed]" in line
         assert "CancelAlreadyCompleted" in line
 
@@ -643,13 +885,54 @@ class TestCancelViaSse:
         respx.post("https://w.example/sessions/s-1/turns/42/cancel").mock(
             side_effect=httpx.ConnectError("network down")
         )
-        log = MagicMock()
+        transcript = MagicMock()
         async with httpx.AsyncClient(base_url="https://w.example") as client:
-            await _cancel_via_sse(client, "s-1", 42, log=log)
-        line = log.write.call_args[0][0]
+            await _cancel_via_sse(client, "s-1", 42, transcript=transcript)
+        line = transcript.mount.call_args[0][0].content
         assert "[cancel_failed]" in line
         assert "ConnectError" in line
 
+    @respx.mock
+    async def test_audit_callback_records_lifecycle(self) -> None:
+        """audit_callback_records_lifecycle [v0.10.0]: when the caller passes
+        an `audit` callback, _cancel_via_sse emits two lines on the happy
+        path (`cancel_post issued …` + `cancel_post ok …`) and two lines on
+        the failure path (`issued` + `failed …`). Gives the debug pane a
+        complete cancel-POST timeline.
+        """
+        respx.post("https://w.example/sessions/s-1/turns/42/cancel").mock(
+            return_value=httpx.Response(200, json=_CANCEL_OK_RESP)
+        )
+        transcript = MagicMock()
+        audit_lines: list = []
+        async with httpx.AsyncClient(base_url="https://w.example") as client:
+            await _cancel_via_sse(
+                client, "s-1", 42, transcript=transcript, audit=audit_lines.append
+            )
+        assert len(audit_lines) == 2
+        assert audit_lines[0].startswith("cancel_post issued ")
+        assert "session_id=s-1" in audit_lines[0]
+        assert "turn_id=42" in audit_lines[0]
+        assert audit_lines[1] == "cancel_post ok turn_id=42"
+
+    @respx.mock
+    async def test_audit_callback_records_failure(self) -> None:
+        """audit_callback_records_failure [v0.10.0]: failure path emits
+        `cancel_post issued` then `cancel_post failed …` with exception type.
+        """
+        respx.post("https://w.example/sessions/s-1/turns/42/cancel").mock(
+            return_value=httpx.Response(500, content=b"boom")
+        )
+        transcript = MagicMock()
+        audit_lines: list = []
+        async with httpx.AsyncClient(base_url="https://w.example") as client:
+            await _cancel_via_sse(
+                client, "s-1", 42, transcript=transcript, audit=audit_lines.append
+            )
+        assert len(audit_lines) == 2
+        assert audit_lines[0].startswith("cancel_post issued ")
+        assert audit_lines[1].startswith("cancel_post failed turn_id=42 CancelFailed")
+
 
 class TestAppMount:
     """on_mount narrows per issue #6: only identity-widget population.
@@ -713,18 +996,18 @@ class TestLayoutShape:
             assert row is not None
 
     async def test_left_column_content_only(self) -> None:
-        """left_column_content_only [v0.6.5]: left column = transcript + prompt
-        + current-text (streaming text Static). thinking-current Static
-        removed entirely as of v0.6.5.
+        """left_column_content_only [v0.9.0]: left column = transcript-scroll
+        VerticalScroll + prompt Input. thinking-current Static removed in
+        v0.6.5; transcript RichLog replaced by VerticalScroll in v0.9.0.
         """
-        from textual.containers import Vertical
-        from textual.widgets import Input, RichLog
+        from textual.containers import Vertical, VerticalScroll
+        from textual.widgets import Input
 
         app = _resolved_app(_args_new(), session_id="s-new12345", agent_id="mimir")
         async with app.run_test() as pilot:
             await pilot.pause()
             left = app.query_one("#left-column", Vertical)
-            transcript = app.query_one("#transcript", RichLog)
+            transcript = app.query_one("#transcript-scroll", VerticalScroll)
             prompt = app.query_one("#prompt", Input)
             assert transcript in left.walk_children()
             assert prompt in left.walk_children()
@@ -749,7 +1032,7 @@ class TestLayoutShape:
             assert tools_tab is not None
 
     async def test_tools_log_inside_tools_tab(self) -> None:
-        """tools_log_inside_tools_tab: tools-log RichLog is a descendant of tools-tab TabPane."""
+        """tools_log_inside_tools_tab: tools-transcript RichLog is a descendant of tools-tab TabPane."""
         from textual.widgets import RichLog, TabPane
 
         app = _resolved_app(_args_new(), session_id="s-new12345", agent_id="mimir")
@@ -800,7 +1083,7 @@ class TestLayoutShape:
             )
 
     async def test_debug_tab_exists(self) -> None:
-        """debug_tab_exists [v0.5.0]: right column has Debug TabPane + #debug-log RichLog."""
+        """debug_tab_exists [v0.5.0]: right column has Debug TabPane + #debug-transcript RichLog."""
         from textual.widgets import RichLog, TabPane
 
         app = _resolved_app(_args_new(), session_id="s-new12345", agent_id="mimir")
@@ -822,36 +1105,45 @@ class TestLayoutShape:
             assert app.query_one("#side-panes", TabbedContent).active == "debug-tab"
 
     async def test_done_label_styled_success(self) -> None:
-        """done_label_styled_success [v0.5.1]: [done] label renders in Aurora green."""
+        """done_label_styled_success [v0.9.0]: [done] label mounts as Static
+        carrying a RichText with Aurora green style. Inspect the mounted
+        Static's `.content`.
+        """
         from rich.text import Text as RichText
+        from textual.containers import VerticalScroll
         from textual.widgets import RichLog
 
         app = _resolved_app(_args_new(), session_id="s-new12345", agent_id="mimir")
         async with app.run_test() as pilot:
             await pilot.pause()
-            # Probe the presenter directly — write a Done via state.render.
             from ratatoskr.tui import TuiPresenterState
-            log = app.query_one("#transcript", RichLog)
+            transcript = app.query_one("#transcript-scroll", VerticalScroll)
             state = TuiPresenterState()
-            seen: list = []
-            orig = log.write
-            log.write = lambda c, *a, **kw: (seen.append(c), orig(c, *a, **kw))[1]
+            mounted: list = []
+            orig_mount = transcript.mount
+
+            def spy_mount(*ch, **kw):
+                mounted.extend(ch)
+                return orig_mount(*ch, **kw)
+
+            transcript.mount = spy_mount  # type: ignore[method-assign]
             state.render(
                 _make_tui_done(),
-                log=log,
+                transcript=transcript,
                 tools_log=app.query_one("#tools-log", RichLog),
                 debug_log=app.query_one("#debug-log", RichLog),
                 thinking_log=MagicMock(),
                 raw=True,
             )
             done = next(
-                c for c in seen
-                if isinstance(c, RichText) and _text_of(c).startswith("[done]")
+                w.content for w in mounted
+                if isinstance(getattr(w, "content", None), RichText)
+                and _text_of(w.content).startswith("[done]")
             )
             assert done.style == "#16B866"  # Aurora green
 
     async def test_empty_state_placeholders_present(self) -> None:
-        """empty_state_placeholders_present [v0.5.1]: tools-log + debug-log show
+        """empty_state_placeholders_present [v0.5.1]: tools-transcript + debug-transcript show
         placeholder lines before any turn fires."""
         from textual.widgets import RichLog
 
@@ -1059,11 +1351,14 @@ async def _submit_and_wait(app: RatatoskrApp, pilot, content: str) -> None:
 
 class TestStreamTurnWorker:
     @respx.mock
-    async def test_happy_text_done_renders_markdown(self, monkeypatch: pytest.MonkeyPatch) -> None:
-        """happy_text_done_renders_markdown [happy,tracer, v0.8.1]:
-        Text("hello") buffers in text_chunk_buffer (no `\\n`); on Done,
-        flushes "hello" tail to transcript, then [done] label, then Rule
-        + Markdown body.
+    async def test_happy_text_done_no_double_print(self, monkeypatch: pytest.MonkeyPatch) -> None:
+        """happy_text_done_no_double_print [happy,tracer, v0.9.0]:
+        Text("hello") mounts a Static(Markdown("hello")) into the transcript;
+        Done mounts a [done] label Static. The Markdown is rendered live (one
+        widget for the whole stream, updated in place), so there is NO
+        post-Done re-render — exactly ONE Markdown renderable lands in the
+        transcript for the response body. v0.9.0 supersedes v0.8.2's
+        drop-Markdown patch with proper live rendering.
         """
         stream = _sse_chunk("42:1", {"type": "text", "content": "hello"}) + _sse_chunk(
             "42:2", _DONE_BODY
@@ -1080,22 +1375,26 @@ class TestStreamTurnWorker:
             await _submit_and_wait(app, pilot, "hi")
             assert app.state == "idle"
             from rich.markdown import Markdown
-            from rich.rule import Rule
 
-            # v0.8.1: "hello" appears in transcript as a tail-flush on Done.
-            assert any(w == "hello" for w in writes)
-            assert any("[done]" in str(w) for w in writes)
-            # Post-Done: Markdown body + Rule + turn-header Rule all present.
-            assert any(isinstance(w, Markdown) for w in writes)
-            assert any(isinstance(w, Rule) for w in writes)
+            # The response body lives as ONE Markdown renderable mounted into
+            # the transcript; live updates happen via Static.update, not via
+            # re-mount, so there's exactly one Markdown in the spy stream.
+            markdowns = [w for w in writes if isinstance(w, Markdown)]
+            assert len(markdowns) == 1, (
+                f"v0.9.0: expected exactly ONE Markdown mounted, got {len(markdowns)}"
+            )
+            assert markdowns[0].markup == "hello"
+            # [done] label fires too.
+            assert any("[done]" in _text_of(w) for w in writes)
 
     @respx.mock
     async def test_raw_flag_skips_markdown_render(self, monkeypatch: pytest.MonkeyPatch) -> None:
-        """raw_flag_skips_markdown_render [trace, v0.6.0]:
-        With --raw, no Markdown render. A turn-header Rule IS still written
-        (v0.6.0 INV — turn correlation lives in every pane). The post-Done
-        Rule(separator) is suppressed; accumulated streamed text is written
-        as a plain string instead.
+        """raw_flag_skips_markdown_render [trace, v0.9.0]:
+        With --raw, the response widget holds plain str instead of Markdown.
+        Turn-header markers still appear in every pane: 3 RichLog panes
+        receive a Rule, the transcript-scroll receives a Static-wrapped
+        RichText (mounted, not written), giving 3 Rules in the captured
+        writes list.
         """
         stream = _sse_chunk("42:1", {"type": "text", "content": "hi"}) + _sse_chunk(
             "42:2", _DONE_BODY
@@ -1113,11 +1412,11 @@ class TestStreamTurnWorker:
 
             # No Markdown in raw mode.
             assert not any(isinstance(w, Markdown) for w in writes)
-            # Only turn-header Rules — one per pane (transcript + tools +
-            # debug + thinking = 4). No post-Done separator Rule.
+            # 3 Rules — one per RichLog pane (tools / debug / thinking).
+            # Transcript-scroll uses a Static turn-header Markdown alternative.
             rules = [w for w in writes if isinstance(w, Rule)]
-            assert len(rules) == 4, f"expected 4 turn-header Rules, got {len(rules)}"
-            # Accumulated text "hi" written as plain string post-Done.
+            assert len(rules) == 3, f"expected 3 turn-header Rules, got {len(rules)}"
+            # Accumulated text "hi" mounted as plain str into transcript.
             assert "hi" in writes
 
     @respx.mock
@@ -1491,8 +1790,14 @@ class TestActionInterrupt:
                 await pilot.pause(0.02)
             # Give _cancel_via_sse time to write the [cancel_failed] line
             await pilot.pause(0.05)
-            log = app.query_one("#transcript", RichLog)
-            rendered = "\n".join(str(strip.text) for strip in log.lines)
+            from textual.containers import VerticalScroll
+            from textual.widgets import Static
+            transcript = app.query_one("#transcript-scroll", VerticalScroll)
+            rendered = "\n".join(
+                str(child.content)
+                for child in transcript.children
+                if isinstance(child, Static)
+            )
             assert "[cancel_failed]" in rendered
             assert app.state == "cancelling"
             stream_gate.set()  # let stream finish for teardown

uv.lock

@@ -968,7 +968,7 @@ wheels = [
 
 [[package]]
 name = "ratatoskr"
-version = "0.8.1"
+version = "0.11.0"
 source = { editable = "." }
 dependencies = [
     { name = "httpx" },