fix(semantic): complete production activation and idle reuse

[ScriptedAlchemy]

Integrates the completed semantic qualification fixes into #707.

Behavior:

• preserves typed activation/configuration/fusion failure stages
• restores persisted activation only after the matching runtime is ready
• keeps published score domains consistent
• projects Ready from the durable activation authority
• completes strict semantic zero-hit first pages without a stale cursor
• reuses the exact warmed model session after idle expiry instead of reopening the 641 MB model

Production evidence:

• fresh isolated profile acquired JinaEmbeddingsV2BaseCode on demand without manual seeding
• offline restart reused unchanged installed model artifacts
• strict semantic search returned genuine semantic contributions
• zero-hit strict search completed successfully
• first strict query after 310 seconds idle completed in 0.72 s; the pre-fix path took 6.07 s and reopened the model
• session-pool exact regression and all 31 session-pool tests passed
• exact 11-commit range scanned by gitleaks with no findings

No threshold, timeout, memory limit, or admission budget was raised.

[changeset-bot]

⚠️ No Changeset found

Latest commit: bc8f4ee

Merging this PR will not cause a version bump for any packages. If these changes should not result in a new version, you're good to go. If these changes should result in a version bump, you need to add a changeset.

Click here to learn what changesets are, and how to add one.

Click here if you're a maintainer who wants to add a changeset to this PR

[chatgpt-codex-connector]

Codex Review Summary

This comment shows the latest Codex review activity on this pull request.

Review	Status	Commit	Review trigger
📝 Code Review	✅ Completed 2026-08-29T05:22:05.126908Z	e496d16	PR opened

ℹ️ About Codex in GitHub

Your team has set up Codex to review pull requests in this repo. Reviews are triggered when you

• Open a pull request for review
• Mark a draft as ready
• Comment "@codex review" or "@codex security review".

Codex reacts with 👀 while any review is running, comments if it has suggestions, and reacts with 👍 once all reviews finish with no findings.

[chatgpt-codex-connector]

💡 Codex Review

Here are some automated review suggestions for this pull request.

Reviewed commit: e496d16dcd

ℹ️ About Codex in GitHub

Your team has set up Codex to review pull requests in this repo. Reviews are triggered when you

• Open a pull request for review
• Mark a draft as ready
• Comment "@codex review".

If Codex has suggestions, it will comment; otherwise it will react with 👍.

Codex can also answer questions or update the PR. Try commenting "@codex address that feedback".

[github-actions]

Performance Comparison codex/tracedecay-total-redesign-plan-reopened → codex/707-qualification-latest

Total Elapsed Time: 5.34s → 5.79s (+8.5%)
CPU Baseline: 89.09µs → 78.91µs (-11.4%)
Benchmark ID: index-bench-timing

timing - Execution duration of functions.

+-------------------------------------------+----------------------------+---------------------------------+---------------------------------+----------------------------------+------------------------------+
| Function                                  | Calls                      | Avg                             | P95                             | Total                            | % Total                      |
+-------------------------------------------+----------------------------+---------------------------------+---------------------------------+----------------------------------+------------------------------+
| tracedecay-index-bench                    | 1 → 1 (+0.0%)              | 5.34s → 5.79s (+8.4%)           | 5.34s → 5.80s (+8.6%)           | 5.34s → 5.79s (+8.4%)            | 100.00% → 100.00% (+0.0%)    |
+-------------------------------------------+----------------------------+---------------------------------+---------------------------------+----------------------------------+------------------------------+
| query.artifact.append_pages               | 13 → 13 (+0.0%)            | 181.63ms → 197.49ms (+8.7%)     | 244.84ms → 269.48ms (+10.1%)    | 2.36s → 2.57s (+8.9%)            | 44.21% → 44.32% (+0.2%)      |
+-------------------------------------------+----------------------------+---------------------------------+---------------------------------+----------------------------------+------------------------------+
| query.artifact.batch.sqlite               | 13 → 13 (+0.0%)            | 124.95ms → 126.22ms (+1.0%)     | 168.82ms → 172.75ms (+2.3%)     | 1.62s → 1.64s (+1.2%)            | 30.41% → 28.32% (-6.9%)      |
+-------------------------------------------+----------------------------+---------------------------------+---------------------------------+----------------------------------+------------------------------+
| query.artifact.batch.postings             | 13 → 13 (+0.0%)            | 109.01ms → 110.09ms (+1.0%)     | 148.90ms → 152.04ms (+2.1%)     | 1.42s → 1.43s (+0.7%)            | 26.53% → 24.70% (-6.9%)      |
+-------------------------------------------+----------------------------+---------------------------------+---------------------------------+----------------------------------+------------------------------+
| code_index.workers.install                | 17 → 17 (+0.0%)            | 62.25ms → 78.98ms (+26.9%) ⚠️   | 317.98ms → 324.53ms (+2.1%)     | 1.06s → 1.34s (+26.4%) ⚠️        | 19.81% → 23.18% (+17.0%)     |
+-------------------------------------------+----------------------------+---------------------------------+---------------------------------+----------------------------------+------------------------------+
| domain.canonical.sha256                   | 114526 → 114526 (+0.0%)    | 10.02µs → 11.55µs (+15.3%)      | 17.54µs → 17.57µs (+0.2%)       | 1.15s → 1.32s (+14.8%)           | 21.49% → 22.83% (+6.2%)      |
+-------------------------------------------+----------------------------+---------------------------------+---------------------------------+----------------------------------+------------------------------+
| code_index.build.and_publish              | 2 → 2 (+0.0%)              | 558.31ms → 631.77ms (+13.2%)    | 576.19ms → 684.72ms (+18.8%)    | 1.12s → 1.26s (+12.5%)           | 20.91% → 21.81% (+4.3%)      |
+-------------------------------------------+----------------------------+---------------------------------+---------------------------------+----------------------------------+------------------------------+
| query.artifact.prepare_pages              | 13 → 13 (+0.0%)            | 46.93ms → 60.87ms (+29.7%) ⚠️   | 66.68ms → 88.67ms (+33.0%) ⚠️   | 610.13ms → 791.33ms (+29.7%) ⚠️  | 11.42% → 13.66% (+19.6%)     |
+-------------------------------------------+----------------------------+---------------------------------+---------------------------------+----------------------------------+------------------------------+
| query.artifact.finalization.advance_wake  | 13 → 13 (+0.0%)            | 52.61ms → 56.45ms (+7.3%)       | 236.45ms → 244.84ms (+3.5%)     | 683.94ms → 733.88ms (+7.3%)      | 12.81% → 12.67% (-1.1%)      |
+-------------------------------------------+----------------------------+---------------------------------+---------------------------------+----------------------------------+------------------------------+
| query.artifact.batch.parallel_prepare     | 13 → 13 (+0.0%)            | 38.50ms → 51.73ms (+34.4%) ⚠️   | 55.05ms → 77.00ms (+39.9%) ⚠️   | 500.54ms → 672.45ms (+34.3%) ⚠️  | 9.37% → 11.61% (+23.9%) ⚠️   |
+-------------------------------------------+----------------------------+---------------------------------+---------------------------------+----------------------------------+------------------------------+
| code_index.extract.parser_artifact        | 276 → 276 (+0.0%)          | 2.06ms → 2.14ms (+3.9%)         | 3.16ms → 3.27ms (+3.5%)         | 567.25ms → 590.56ms (+4.1%)      | 10.62% → 10.19% (-4.0%)      |
+-------------------------------------------+----------------------------+---------------------------------+---------------------------------+----------------------------------+------------------------------+
| code_index.chunk.index_file               | 276 → 276 (+0.0%)          | 2.82ms → 2.14ms (-24.1%) 🚀     | 3.02ms → 3.03ms (+0.3%)         | 777.22ms → 589.27ms (-24.2%) 🚀  | 14.55% → 10.17% (-30.1%) 🚀  |
+-------------------------------------------+----------------------------+---------------------------------+---------------------------------+----------------------------------+------------------------------+
| code_index.lexical_source.batch_stage     | 14 → 14 (+0.0%)            | 31.51ms → 34.69ms (+10.1%)      | 47.87ms → 53.90ms (+12.6%)      | 441.21ms → 485.70ms (+10.1%)     | 8.26% → 8.38% (+1.5%)        |
+-------------------------------------------+----------------------------+---------------------------------+---------------------------------+----------------------------------+------------------------------+
| 🆕 code_index.build.materialize_increment | 0 → 1 (+100.0%) ⚠️         | 0.00ns → 422.20ms (+100.0%) ⚠️  | 0.00ns → 422.31ms (+100.0%) ⚠️  | 0.00ns → 422.20ms (+100.0%) ⚠️   | 0.00% → 7.29% (+100.0%) ⚠️   |
+-------------------------------------------+----------------------------+---------------------------------+---------------------------------+----------------------------------+------------------------------+
| 🆕 code_index.build.assemble              | 0 → 2 (+100.0%) ⚠️         | 0.00ns → 207.78ms (+100.0%) ⚠️  | 0.00ns → 217.06ms (+100.0%) ⚠️  | 0.00ns → 415.57ms (+100.0%) ⚠️   | 0.00% → 7.17% (+100.0%) ⚠️   |
+-------------------------------------------+----------------------------+---------------------------------+---------------------------------+----------------------------------+------------------------------+
| 🗑️ code_index.chunk.map_ordered           | 780 → 0 (-100.0%) 🚀       | 630.10µs → 0.00ns (-100.0%) 🚀  | 644.10µs → 0.00ns (-100.0%) 🚀  | 491.48ms → 0.00ns (-100.0%) 🚀   | 9.20% → 0.00% (-100.0%) 🚀   |
+-------------------------------------------+----------------------------+---------------------------------+---------------------------------+----------------------------------+------------------------------+
| 🗑️ code_index.build.materialize_full      | 1 → 0 (-100.0%) 🚀         | 366.64ms → 0.00ns (-100.0%) 🚀  | 366.74ms → 0.00ns (-100.0%) 🚀  | 366.64ms → 0.00ns (-100.0%) 🚀   | 6.86% → 0.00% (-100.0%) 🚀   |
+-------------------------------------------+----------------------------+---------------------------------+---------------------------------+----------------------------------+------------------------------+

---

Generated with hotpath-rs

[ScriptedAlchemy]

This PR's content is fully merged into #707's branch codex/tracedecay-total-redesign-plan-reopened; the landed merge tip is 7cca98da41 (absorption merges 25da3fa9c6, 1f18f07ceb, 0bd3545e2a, 7cca98da41 — head bc8f4ee6c4 is an ancestor of the pushed branch).

All three Codex review findings are resolved on the integration branch:

• P1 cold-open core availability: d3e3ba6516 (revision-bound mount_query_authority_for_committed_fallback keeps exact/lexical/graph mountable while the committed semantic restore is deferred), plus an end-to-end deferred-restore regression test deferred_committed_restore_keeps_core_query_lanes_mountable proven falsifiable against the unfixed fence.
• P2 status-snapshot race: d3d58ac7f5 (with_project_semantic_activation_receipt holds one activation-gate acquisition across receipt + scheduler projection), plus an end-to-end coherence test application_status_observes_activation_mutations_coherently.
• P2 idle session sibling reaping: 08c79ea077.

Conflict adjudication kept the landed #707 mechanisms (3-arg application_status_from_projection with lifecycle overlay, DaemonSemanticRuntimeBackendV1::from_production, decomposed tracedecay-maintenance/tracedecay-runtime-core layout) and ported this branch's test contracts. Verified on the merged tree: lean + hotpath -p tracedecay --lib checks, and the touched suites (usecases semantic_runtime/retention/feedback, semantic session_pool, query semantic, domain configuration, runtime-core resident_memory, rusqlite exact_sql, global-db configuration, lsp diagnostics, sessions compression, daemon query_authority_provider) — all green; the only local failure is the env-gated distribution-acceptance journey test that requires TRACEDECAY_DISTRIBUTION_FASTEMBED_FIXTURE.

Closing as fully absorbed into #707.