feat(provider): split memory search scope_filter → scope_all + scope_any (bifrost 0.8.0/wire v0.6)

Repin bifrost 0.7.0→0.8.0 and reimplement the memory store's search scope
filter to the v0.6 split (#11): scope_all (AND/intersection) + scope_any
(OR/union over a list of conjunctive scopes), at parity with the v0.6
reference _matches_scope / _validate_scope. No-compat: scope_filter removed.

scope_any is the union-visibility primitive that resolves the #295/#297
silent-zero AND foot-gun — a subset-scoped chunk now recalls via an OR
member. End-to-end cold recall now gated only on Worldtree emitting
scope_any on its recall path (#297, upstream).

- store: search(scope_all, scope_any); _scope_subset + _matches_scope + _validate_scope
- contract v1.2: search FN sig, INV-005 recomposed, PRE-003 both fields, scope_any_union test
- tests: scope_any union, scope_all∧scope_any compose, both-empty match-all; parity vs real 0.8.0 dispatch (433 green)
- #17 contract: sync stale scope_filter/_scope_matches-AND refs to scope_all/scope_any
- runbook + persistent-memory updated; provider bounced onto 0.8.0 (fresh empty db)

v0.17.6

uv.lock

@@ -190,14 +190,14 @@ wheels = [
 
 [[package]]
 name = "bifrost"
-version = "0.7.0"
+version = "0.8.0"
 source = { registry = "https://gitea.phasefinal.com/api/packages/vh/pypi/simple/" }
 dependencies = [
     { name = "jsonschema" },
 ]
-sdist = { url = "https://gitea.phasefinal.com/api/packages/vh/pypi/files/bifrost/0.7.0/bifrost-0.7.0.tar.gz", hash = "sha256:27d5c2c3052ad48510a4a73973141f2177b9e1f66576ab3d8976d5c4deb5bfac" }
+sdist = { url = "https://gitea.phasefinal.com/api/packages/vh/pypi/files/bifrost/0.8.0/bifrost-0.8.0.tar.gz", hash = "sha256:28194877c81a056a0803b052e86902c092e965d4ce63a5623d7a31240cedb645" }
 wheels = [
-    { url = "https://gitea.phasefinal.com/api/packages/vh/pypi/files/bifrost/0.7.0/bifrost-0.7.0-py3-none-any.whl", hash = "sha256:9704c50430f350f6dde5428f79a8719e044021ce717a5eac60a13424b1ee4623" },
+    { url = "https://gitea.phasefinal.com/api/packages/vh/pypi/files/bifrost/0.8.0/bifrost-0.8.0-py3-none-any.whl", hash = "sha256:2aac5e4a7828d718389748a78dae6baeb5e9ee4a801a10c427c06c5cc7ed6597" },
 ]
 
 [[package]]
@@ -1052,7 +1052,7 @@ wheels = [
 
 [[package]]
 name = "ratatoskr"
-version = "0.17.5"
+version = "0.17.6"
 source = { editable = "." }
 dependencies = [
     { name = "httpx" },
@@ -1086,7 +1086,7 @@ web = [
 
 [package.metadata]
 requires-dist = [
-    { name = "bifrost", marker = "extra == 'provider'", specifier = ">=0.7.0", index = "https://gitea.phasefinal.com/api/packages/vh/pypi/simple/" },
+    { name = "bifrost", marker = "extra == 'provider'", specifier = ">=0.8.0", index = "https://gitea.phasefinal.com/api/packages/vh/pypi/simple/" },
     { name = "httpx", specifier = ">=0.27" },
     { name = "httpx-sse", specifier = ">=0.4" },
     { name = "jsonschema", marker = "extra == 'provider'", specifier = ">=4" },