---
contract_version: "2.1"
module: "ratatoskr.web"
purpose: "v0.19.2 web debug-surface parity: 3 admin/debug panes (Tools inventory, BifrostState, AdminEvents SSE) proxied server-side with the admin key server-held, plus a reliable PAD-refresh poll and a non-engine reasoning indicator in the transcript."
target_module: "ratatoskr.web (server.py routes + entrypoint.py + static/index.html)"
scope: "v0.19.2 web debug-surface parity — bring the browser surface (now the PRIMARY debug surface) to TUI parity. THREE new admin/debug panes proxied server-side + TWO transcript affordances. (1) Tools inventory: GET /api/sessions/{id}/tools proxies owner-scoped get_session_tools into the tools pane (what the LLM HAS at turn-fire), above the live tool events. (2) BifrostState pane: GET /api/sessions/{id}/bifrost proxies admin-scoped get_session_bifrost; the admin key is SERVER-HELD (app.state.admin_key from RATATOSKR_ADMIN_API_KEY), never sent to the browser. (3) AdminEvents pane: GET /api/admin/events is an SSE proxy of stream_admin_events, session-filtered SERVER-side (heartbeats + other-session events dropped), re-emitted under a fixed 'admin_event' name so every dotted type renders with one browser listener. (4) PAD refresh: the persona/affect pane polls a bounded window instead of a single 2s shot that raced the post-turn-async affect.emit. (5) Reasoning indicator: an ephemeral, clearly-non-engine transcript line on `thinking` deltas, cleared when text begins. Direct in-session TDD (the #17/#18 pattern); this contract is authored post-implementation to anchor the heid code review (the client wrappers get_session_tools/get_session_bifrost/stream_admin_events are already contracted in the sessions/sse_client specs — this contract governs the WEB proxy + presenter surface only. v0.20.0 REDESIGN (Claude Design 'Ratatoskr Console' import): the tabbed telemetry column is replaced by a 3-column command-console — a left engine-ticker rail (the DEBUG + ADMIN + tool/turn-lifecycle feeds MERGED into one timeline via tickerAdd, plus a tools-armed chip list + a full-detail Bifrost rail pane) · a center conversation (per-turn INLINE chain-of-thought, replacing the separate Think pane) · a right resizable affect console (dominant/canonical-mood centerpiece + bipolar PAD faders each carrying a turn-to-turn Δ+sparkline + a P×A mood orbit + relations metric rows + canonical directive). ALL SERVER ROUTES UNCHANGED. Single-file/no-CDN/vanilla preserved; adds a light/dark theme toggle (dark default) + an inlined data-URI favicon. Presenter FN renames tracked below (renderBifrostState→renderBifrost; renderAffectPane→renderConsole; setPersonaStrip removed; tickerAdd/setFader/setFaderTrend/renderOrbit/renderDominant/renderDerived/renderRelations/renderDirective added). INV-001/INV-004 held.)."
depends_on:
  - "httpx"
  - "starlette"
  - "ratatoskr.sessions"          # get_session_tools, get_session_bifrost, SessionApiFailed
  - "ratatoskr.sse_client"        # stream_admin_events, AdminEvent, SseConnectFailed/Dropped
used_by:
  - "ratatoskr.web.entrypoint"    # passes admin_key=RATATOSKR_ADMIN_API_KEY into create_app
language: "python + vanilla JS (single-file SPA, no build)"
complexity: "medium"
estimated_loc: 290
confidence: 0.8
assumptions:
  - "The three client wrappers exist and are already contracted: get_session_tools(client, session_id)->dict (owner-scoped, consumer bearer; non-200 -> SessionApiFailed), get_session_bifrost(client, session_id, *, admin_key)->dict (OVERRIDES Authorization with admin_key; non-200 -> SessionApiFailed), stream_admin_events(client, *, admin_key)->AsyncIterator[AdminEvent] (non-200 -> SseConnectFailed; mid-drop -> SseConnectionDropped). The web routes are thin proxies over them; they add NO new upstream semantics."
  - "AdminEvent = {id:int, type:str, timestamp:str|None, data:dict}. data MOST carry session_id (INV-049). type is a dotted namespace (session.*/turn.*/key.*/system.*)."
  - "The web SPA is a single static/index.html served per-request via FileResponse (edits land on browser refresh; server code changes need a restart). Model/tool/admin content is UNTRUSTED text (INV-004) — every render path escapes first (esc() via textContent, or JSON.stringify wrapped in esc())."
  - "The internal-LAN trust model (0.0.0.0, no auth/TLS/CORS) is deliberate operator direction. Admin-scoped DATA becoming LAN-visible is accepted under that model; the admin KEY must nonetheless never cross to the browser."
  - "Tests: respx mocks the upstream endpoints (absolute w.example URLs) driven through the TestClient; the AdminEvents SSE proxy is tested with a finite mocked SSE byte-stream asserting the filter + fixed event name. Live-proven against ratatoskr:sindra on personal :8081."

# ─────────────────────────────────────────────────────────────────────────────
functions:
  - name: "_session_tools_endpoint"
    signature: "async _session_tools_endpoint(request: Request) -> JSONResponse"
    description: "GET /api/sessions/{session_id}/tools — proxy owner-scoped tool inventory."
    preconditions:
      - "session_id in path_params."
    postconditions:
      - "POST-001: 200 with the upstream inventory dict verbatim on success."
      - "POST-002: on SessionApiFailed(status) -> JSONResponse({error_code:'session_tools_unavailable', status}, status_code=status) — status-preserving."
    steps: "Open client_factory() client; await get_session_tools(client, session_id); return 200. Except SessionApiFailed -> status-preserving envelope."
    flexibility: "prescriptive"

  - name: "_session_messages_endpoint"
    signature: "async _session_messages_endpoint(request: Request) -> JSONResponse"
    description: "GET /api/sessions/{session_id}/messages — proxy the session's message history so the SPA renders existing turns on open (notably a #347 authored first-message seeded at create-time; without it a seeded session's transcript is blank until the user speaks)."
    preconditions:
      - "session_id in path_params."
    postconditions:
      - "POST-001: 200 with the upstream {session_id, items, next_cursor} dict verbatim on success."
      - "POST-002: on SessionApiFailed(status) -> JSONResponse({error_code:'session_messages_unavailable', status}, status_code=status) — status-preserving."
    steps: "Open client_factory() client; await get_session_messages(client, session_id); return 200. Except SessionApiFailed -> status-preserving envelope."
    flexibility: "prescriptive"

  - name: "_session_bifrost_endpoint"
    signature: "async _session_bifrost_endpoint(request: Request) -> JSONResponse"
    description: "GET /api/sessions/{session_id}/bifrost — proxy admin-scoped Bifrost dispatch state."
    preconditions:
      - "session_id in path_params."
      - "PRE-001 (fail-visible): app.state.admin_key must be truthy; else 400 admin_key_not_configured with NO upstream call."
    postconditions:
      - "POST-001: the admin key is read from app.state.admin_key ONLY; it is passed to get_session_bifrost(admin_key=...) and NEVER placed in a response body or surfaced to the browser."
      - "POST-002: 200 with the upstream state dict verbatim on success."
      - "POST-003: on SessionApiFailed(status) -> {error_code:'bifrost_state_unavailable', status} at status_code=status (notably 404 not-bound, 403 scope-denied)."
    steps: "If not admin_key -> 400. Open client; await get_session_bifrost(client, session_id, admin_key=admin_key); 200. Except SessionApiFailed -> status-preserving envelope."
    flexibility: "prescriptive"

  - name: "_admin_event_matches_web"
    signature: "_admin_event_matches_web(ev: AdminEvent, session_id: str | None) -> bool"
    description: "AdminEvents session-filter (mirrors the TUI _admin_event_matches, design-brief §6)."
    postconditions:
      - "POST-001: ev.type == 'system.heartbeat' -> False (keepalive noise dropped)."
      - "POST-002: ev.type.startswith('system.') (non-heartbeat) -> True (stream-integrity signals always pass)."
      - "POST-003: otherwise -> True IFF session_id is not None AND ev.data.get('session_id') == session_id (per-session scoping; a None session_id forwards NO non-system event)."
    flexibility: "prescriptive"

  - name: "_admin_events_endpoint"
    signature: "async _admin_events_endpoint(request: Request) -> Response"
    description: "GET /api/admin/events?session_id=... — SSE proxy of stream_admin_events, session-filtered server-side."
    preconditions:
      - "PRE-001 (fail-visible): app.state.admin_key truthy; else 400 admin_key_not_configured with NO stream opened."
    postconditions:
      - "POST-001: returns StreamingResponse(media_type='text/event-stream'); the admin key never crosses to the browser."
      - "POST-002: ONLY events passing _admin_event_matches_web(ev, session_id) are forwarded; each is re-emitted under the FIXED SSE event name 'admin_event' with {id,type,timestamp,data} in the payload (the real dotted type rides in the payload, so one browser listener renders every type — nothing silently dropped by name)."
      - "POST-003: SseConnectFailed/SseConnectionDropped/MalformedSseId/MalformedSseData -> a single 'stream_error' SSE frame, then the stream ends (best-effort; never raises to the browser)."
      - "POST-004: asyncio.CancelledError (browser disconnect) re-raises to unwind the generator; the upstream client is aclose()'d in finally on every exit path."
    steps: "If not admin_key -> 400. gen(): open client; async-for ev in stream_admin_events(admin_key); skip unless _admin_event_matches_web; yield _format_sse('admin_event', {...}). Except SSE errors -> yield stream_error. Except CancelledError -> raise. Finally aclose(). Return StreamingResponse(gen())."
    flexibility: "prescriptive"

  - name: "create_app (amendment)"
    signature: "create_app(client_factory, *, end_user_id=None, bifrost_consumer_key=None, bifrost_visible_host=None, affect_read_url=None, admin_key=None) -> Starlette"
    description: "New optional admin_key param stored at app.state.admin_key; entrypoint passes RATATOSKR_ADMIN_API_KEY. Three new routes registered."
    postconditions:
      - "POST-001: app.state.admin_key = admin_key (default None -> the two admin routes fail-visible per their PRE-001)."
      - "POST-002: routes /api/sessions/{session_id}/tools, /api/sessions/{session_id}/bifrost, /api/admin/events added; existing routes unchanged."
    flexibility: "closed"

  - name: "reasoning indicator (index.html: showThinkingNote / hideThinkingNote)"
    signature: "showThinkingNote() ; hideThinkingNote()  // called from the turn SSE loop"
    description: "Ephemeral transcript affordance signalling reasoning inference — clearly NOT engine output."
    postconditions:
      - "POST-001: on the first `thinking` delta, an italic '<Agent> <phrase>' line (✦ glyph, rotating phrase) is shown; it supersedes any live 'awaiting first token' heartbeat."
      - "POST-002: the agent display name is derived from state.agentId and rendered via textContent (NEVER innerHTML) — INV-004 holds even for an adversarial agent_id."
      - "POST-003: it is removed the instant the first `text` delta arrives, and on any terminal (done/error/cancelled); the rotation interval is cleared on removal (no leaked setInterval)."
    flexibility: "prescriptive"

  - name: "PAD refresh poll (index.html: terminal() done-branch)"
    signature: "on Done: poll loadPersona over [1500,3500,6500,10500]ms"
    description: "Catch the post-turn-async affect.emit without racing it (replaces the single 2s shot)."
    postconditions:
      - "POST-001: loadAffect sets state.lastAffectAt = snap.emitted_at; the poll captures beforeAt and stops (settled) once state.lastAffectAt !== beforeAt."
      - "POST-002: a scheduled poll no-ops if a NEW turn has started (state.turnId truthy) or already settled — no refresh of a stale agent, no unbounded polling."
    flexibility: "open"

  - name: "loadTranscript (index.html)"
    signature: "async loadTranscript(sessionId) -> void"
    description: "On session open, GET /api/sessions/{id}/messages and render each EXISTING turn into #transcript — notably a #347 authored first-message seeded at create-time (which lives in the ledger, not the live turn stream, so without this the transcript is blank until the user speaks)."
    postconditions:
      - "POST-001: assistant items render as a .response .md-body bubble via markdownSafe(content) (escape-first whitelist, same path as appendResponse); user items render as a .prompt-echo via textContent — no upstream content reaches innerHTML unescaped (INV-004)."
      - "POST-002: any non-200, fetch error, or parse error is swallowed (best-effort) — a blank transcript is acceptable; opening the workspace is never blocked."
    flexibility: "prescriptive"

  - name: "web pane renderers (v0.20.0: index.html: renderToolsInventory / renderBifrost / openAdminEvents + tickerAdd)"
    signature: "renderToolsInventory(inv) ; renderBifrost(b) ; openAdminEvents(sessionId) ; tickerAdd(kind, msg, dim)"
    description: "Render the debug/admin surfaces into the 3-column console; all content escaped (INV-004). v0.20.0: BifrostState is now a full-detail LEFT-RAIL pane (renderBifrost, renamed from renderBifrostState); AdminEvents + the raw debug/op log + tool_start/result + turn lifecycle are MERGED into one engine-ticker timeline via tickerAdd (openAdminEvents routes admin_event → tickerAdd; the turn SSE handlers route worker_phase/tool/text_boundary/affect_update → tickerAdd); Tools inventory is a rail chip list (renderToolsInventory)."
    postconditions:
      - "POST-001: every dynamic value (agent_id, tool names/descriptions, endpoint, caps, consumer_id, admin event type + data, ticker msg/dim) is passed through esc() or esc(JSON.stringify(...)); no upstream string reaches innerHTML unescaped."
      - "POST-002: openAdminEvents closes a prior EventSource before opening a new one (state.adminES) and, on stream_error, closes so native EventSource does NOT retry-loop; admin events render into the engine ticker via tickerAdd."
      - "POST-003: renderToolsInventory renders builtin + bifrost tool NAMES as rail chips (a compact 'what does the LLM have' glance); renderBifrost renders endpoint + connected + consumer_id + capabilities_granted chips + per-tool name/description rows (the full detail, admin-gated; the admin key stays server-held). tickerAdd bounds the feed to the last 400 rows (a tail, not an archive)."
      - "POST-004: tool NAME-vs-DESCRIPTION split preserved — the rail chip list shows names only; per-tool descriptions live in the Bifrost pane's tools list. The engine-ticker spine (.ticker-inner::before) lives on the content-height wrapper so it stays visible when auto-scrolled to the newest entry."
    flexibility: "open"

  - name: "renderConsole + trend (v0.20.0 — unified persona/affect console; supersedes renderAffectPane/renderPersonaPane/setPersonaStrip)"
    signature: "renderConsole(snap) ; setFader(axis,v) ; setFaderTrend(axis) ; renderOrbit() ; renderDominant(snap) ; renderDerived(snap) ; renderRelations(snap) ; renderDirective(snap) ; pushAffectHistory(snap) ; sparkPointsH(vals,w,h,endX) ; stripPoints(vals) ; proj3(p,a,d) ; trendDelta(vals)"
    description: "ONE render path for BOTH the Tier-1 persona_state snapshot and the Tier-3 affect snapshot (renderConsole), feeding the right affect console: dominant/canonical-mood centerpiece, bipolar PAD faders (each with a turn-to-turn Δ + sparkline), a P×A mood orbit from PAD history, an affect-derived grid, relations metric rows, and the canonical directive. Replaces the v0.19.x split of renderPersonaPane (Tier-1 pane) + renderAffectPane (Tier-3 pane) + setPersonaStrip (top-bar strip, removed — PAD now lives in the console faders)."
    postconditions:
      - "POST-001: reads snap.relations (relation_edge/1: target_entity + trust_ability/benevolence/integrity + warmth as {value,confidence,evidence_count} + agency + relation_context) — the CURRENT Worldtree emit shape; falls back to the legacy flat snap.valence for an older emitter. Tier-1 fields (baseline_pad, mood_drift, dominant_emotion, emotions_active) render WHEN PRESENT, '—' when absent (Tier-3 lacks them)."
      - "POST-002: SVG sparklines (v0.20.4, adapted from the design prototype; replace the unicode strings). Each PAD fader shows current value + Δ-vs-previous (▲/▼) + a VERTICAL SVG strip (`stripPoints`, 26×132, time down Y newest-at-bottom, value on X ±11, gradient-faded via stripFade{P,A,D}, dot at newest). Each relation metric shows a HORIZONTAL SVG sparkline (`sparkPointsH`, 56×13, auto-scaled to its OWN range, sparkFade gradient + end dot). renderOrbit is now a 3D ISOMETRIC P×A×D cube (`proj3`: P right-down / A left-down / D up, 2:1 iso, center 62,66, scale 26) plotting the trajectory + a pulsing now-marker + a drop line to the D=−1 floor + a floor shadow ellipse (depth cue). All drawn from AFFECT_HIST (rolling, HIST_CAP=24, session-lived); sparkline coords are computed numerics (no upstream strings → INV-004 trivially held). Gradients live in one hidden `<defs>` svg in the console."
      - "POST-003: pushAffectHistory dedupes by emitted_at||last_updated_at so the ~4x/turn post-turn PAD poll contributes ONE sample/turn; history is CLIENT-side only (lost on reload — durable cross-session history via a provider-side snapshot log is a deferred follow-up, NOT built here)."
      - "POST-004: INV-001 honesty — no fabricated Tier-1 fields. The dominant-emotion centerpiece shows a real OCC dominant_emotion (Tier-1) OR the CANONICAL mood word from canonMood(pad) (Tier-3, dimmed) OR '—'; NEVER a synthesized emotion. The affect-derived grid drops non-emitted metrics (intensity/decay-τ) and shows only real/client-derived cells (baseline/drift real for Tier-1, client-derived samples/volatility). INV-004 — every dynamic value passes through esc(); numerics go through toFixed, never innerHTML-raw."
    flexibility: "open"

  - name: "canonical affect-NL + context-injection reconstruction (v0.19.5 canons; v0.20.2 full context-injection panel)"
    signature: "canonMood(pad) ; canonDirective(rel) ; canonPadFallback(pad) ; canonEmotionDirective(type) ; renderDirective(snap) ; loadPersonaCanon()"
    description: "Reconstruct + render the HIDDEN affect-context block Worldtree assembles into the agent's system prompt (never on any wire) — byte-exact to Worldtree's own describe_pad + render_d2_canonical + derive_directive + _pad_band_fallback. The v0.20.2 'context injection' panel shows the full block: mood descriptor + mood directive + relationship directive. Reference: docs/vendor/worldtree-persona-canon/affect-egress-consumer-reference.md (pinned)."
    postconditions:
      - "POST-001: DETERMINISTIC, no LLM. canonMood mirrors describe_pad (valence×arousal grid + strict ±0.3 bands + dominance clause); canonDirective mirrors render_d2_canonical; canonPadFallback mirrors renderer._pad_band_fallback BYTE-EXACT (P×A quadrant: hi/lo/mid arousal band × p>0.3/<-0.3/neutral, with the negative_low_dominance (d<-0.3) special case + neutral_high_a + default); canonEmotionDirective is the occ_directives[type].directive lookup (+ tier / full_only flag)."
      - "POST-002: the canon DATA is VENDORED (docs/vendor/worldtree-persona-canon/{d2-mood-render-canon-v1,d2-render-canon-v1}.json), pinned drift-gated in .corviduo-canonicals.toml; the flat browser form (static/persona_render_canon.json, served /static) is regenerated by scripts/build_persona_canon.py via Worldtree's OWN authoritative loader — v0.20.2 extended it to emit mood_directive {occ_directives, pad_band_fallback, salience, pad_band_cutoff, full_only}. The affect-egress consumer reference is pinned tolerate_drift (worldtree-affect-egress-consumer-reference-v1; worldtree-dev co-signs + pings on change)."
      - "POST-003: fail-open — canon absent (fetch fails) → the reconstructed lines OMIT, the structured console still renders. Every canon-derived string is esc()'d before the DOM (INV-004)."
      - "POST-004: HONEST-PARTIAL provenance (affect-egress-reference §3). The mood descriptor + relationship directive are EXACT (tagged 'exact'); the mood DIRECTIVE is a CANDIDATE pair (tagged 'candidate') — the OCC emotion directive for the delivered dominant_emotion type AND the PAD-band fallback — because affect.emit is type-only (no intensity) so the salience gate (≥0.2) can't be evaluated; BOTH are shown with the 'injected if intensity ≥ salience' caveat, never asserting which fires. When dominant_emotion is absent the fallback alone is EXACT. The panel is labeled reconstructed + hidden-from-consumers + dev-only (the reference-impl's sanctioned understand/reconstruct use, NOT end-user display per the reference's caveat). WATCH: a pending Worldtree render_d2_canonical change conditionally drops the trailing 'avoid premature we-framing' clause under a 3-gate combo — canonDirective holds as-is until worldtree-dev pings with the exact conditional + a canon bump."
    flexibility: "open"

invariants:
  - "INV-004 (untrusted-render): ALL model / tool / admin / agent-supplied text is escaped before entering the DOM (esc via textContent, or esc(JSON.stringify)). No new render path introduces an innerHTML sink for upstream content. This is the highest-value review target — the new JS render paths are NOT unit-tested."
  - "INV-ADMIN-KEY: the admin key exists ONLY at app.state.admin_key (from RATATOSKR_ADMIN_API_KEY). It is never serialized into any response, never sent to the browser, never logged. The browser receives only the session-filtered RESULT of admin-scoped reads."
  - "INV-FILTER: AdminEvents filtering happens SERVER-side (_admin_event_matches_web) — the browser never receives the cross-session admin firehose; only active-session events + non-heartbeat system.* cross the wire."
  - "INV-FAIL-VISIBLE: both admin routes return 400 admin_key_not_configured when the key is absent — never a silent empty pane, never an upstream call with an empty bearer."
  - "INV-LIFECYCLE: SSE generators and EventSources are cleaned up on every exit path (upstream client aclose() in finally; setInterval cleared in hideThinkingNote; prior EventSource closed before re-open) — no leaked connections, tasks, or timers."
  - "INV-ADDITIVE: existing routes, panes, and the turn-stream path are unchanged; the 3 new routes + 2 new tabs are purely additive (59 web tests incl. all prior ones stay green)."
---

# v0.19.2 — web debug-surface parity (BifrostState · AdminEvents · Tools · PAD-poll · reasoning)

## Context

The browser surface is now the operator's PRIMARY debug surface, and it lagged the
TUI: the TUI gained Tools/BifrostState/AdminEvents panes (v0.18.9–.11) that were never
ported to the web. This change closes that gap and adds two transcript affordances (a
reliable PAD refresh + a reasoning indicator). The client wrappers already existed and
are contracted elsewhere; this contract governs the WEB proxy routes + the SPA presenter
paths, whose JS render code is not unit-tested — hence the cross-frontier code review.

## Review focus (for the heid panel)

1. **INV-004 escaping** in every new render path — the un-unit-tested surface; the exact
   class of bug (`renderPersonaPane` fabricating a Tier-1 field) that only a cross-model
   review caught on #18 D2.
2. **INV-ADMIN-KEY** — confirm the admin key never reaches a response body or the browser.
3. **AdminEvents SSE proxy** (`_admin_events_endpoint`) — generator/filter/lifecycle: fixed
   event name, server-side filter, `stream_error` on failure, `aclose()` on every path,
   `CancelledError` re-raise on disconnect.
4. **PAD-poll** stop-condition — does `emitted_at` advancement + the `state.turnId` guard
   correctly stop the poll without racing or leaking timers?
5. **Reasoning indicator** lifecycle — shown on first `thinking`, removed on first `text`
   or terminal, interval cleared (no leaked `setInterval`), name via `textContent`.
