[AbirAbbas]

Summary

Workstreams move into the app (the Workstreams plan, E2). The engine keeps only the generic pieces it gained on this branch and drops everything that existed only for workstreams:

• Removed: internal/workstream/** (store, page renderer), cmd/codeaf/appworkstreams*.go (wire handlers, agent door, sources, morning-wake scheduler, the WorkstreamJobEvent hook), internal/appwire/workstreams*.go and the workstreams / workstream_sources hello features, internal/session/workstream_*.go and the agent's built-in workstream tools and prompt section, the conformance fixtures, the workstream-wake replay purpose and spend-owner row, the old launch-cleanup hook (v3WorkstreamKeeps), and the agent door that Fresh/Open copied from the launch config (removing the field removes that bug). 139 files.
• Kept (generic): collections hold Factory jobs (factory_job refs, --factory, resolved targets; the resolver moves to cmd/codeaf/appcollections_factory.go under generic names, with its own tests), client tools (Client tools: a client attaches tools to a conversation; collection-held conversations are kept #2334), collection-held conversations survive cleanup and reopen after a restart (Client tools: a client attaches tools to a conversation; collection-held conversations are kept #2334), the cmd/codeaf 25-minute CI timeout and this branch's CI triggers.
• Data: schema 7. The store writes user_version = 7: collections and memberships in the generic shape, nothing else. Versions 1–7 are read as they stand; the first write migrates inside its own transaction. 1/2 are copied into the generic tables; 3–6 (development builds only) lose their 12 extra tables, 10 indexes and 4 triggers while every collection, membership and ref stays; a former workstream becomes a plain, deletable collection. A failed first write leaves the file as it was; 8+ and foreign files are refused unmodified.
• Docs: protocol and collections manual keep factory_job and client tools; the 13 unreleased workstream and client-tools entries become one added entry.

Validation contract

Item	Covered by
(a) no workstream symbol, method, tool, feature or table remains	git grep -n -i workstream -- . ':!internal/head/toolbelt.go' → only the two workstreams/main CI trigger lines, the legacy cleanup statement in internal/workspace/schema7.go, and the frozen schema-6 fixture SQL in schema7_test.go (internal/head/toolbelt.go is older code using the English word)
(b) generic pieces still work	both collections_factory_job_test.go, appcollections_factory_test.go (batching, cache, nesting, fallback bounds, target states, panic waiters), the client-tools and collection-keep suites from #2334, schema3_test.go generic rebuild tests
(c) schema 7 migrates version-6 and version-2 files keeping every collection, membership and ref; idempotent	schema7_test.go: realistic v6 file (every legacy table populated, nested collections, same job in two collections, sequence gaps) read-before-write unchanged, first write → 7 with rows/seq/times/factory/high-water marks kept and legacy objects gone, second write runs no DDL; v2 file; v3–5 shapes; failed first write rolls back; v8 and foreign id refused
(d) only baseline reds	run 41736774861: touched codeaf and touched rest (workspace, appwire, codeaf-replay) green; session and light gate red only on TestALandStartsNoAutomaticMaintenance, the two TestNoRoad… complexity laws, TestProgramHoldClassifiesEveryRegisteredChatTool, the fixed/lean prefix budgets (same byte counts as app/v3), and the flaky TestRenderAdmissionIsBoundedAndReleasedOnSettle; codeaf's TestRecipeDoorWritesTheWorktreeWhenOnlyTheCheckoutIsHeld is marked already failing on the base. A fresh app/v3 Full check (run 41735053886) fails the same six plus TestRetireWaitsForTheSaveOfTheHostItAskedToGo
(e) diff against app/v3 shrinks to the generic pieces	three-dot diff against app/v3: before 192 files, +32,820 / −304; after 51 files, +4,602 / −290 (client tools and their tests are about 2.9k of that)

Compatibility

app/v3 refuses a version-7 file, as it refuses 3–6 today: its gate accepts only 1 and 2, its ON CONFLICT(collection_id,kind,ref_id,session_id) does not match the five-column UNIQUE, its duplicate copies memberships without factory, and it does not know the factory_job kind. Version 7 support therefore needs the Factory-ref code itself and goes in when this branch merges into app/v3.

Known flake, not from this branch

TestKnowledgeCapturesSavedTurnsOnlyAfterOptIn (seen failing on #2334): a race in base code. StartBuild enables the memory setting before the transaction that commits created_at; in that window consent reads "enabled since epoch", so a queued journal wake can admit the pre-opt-in turn (4 sources instead of 2). No file on this branch touches that path; the fix belongs with the knowledge owners.

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