feat(hotpath): fill agent-hosts hook dispatch/store gaps

[ScriptedAlchemy]

Summary

Fills the remaining #[hotpath::measure] coverage gaps in crates/tracedecay-agent-hosts only (HP-hosts). Attribute-only change: 38 added lines, zero behavior changes, no Cargo.toml edits, no hotpath/tokio, hotpath stays off in default/production builds (macros expand to no-ops without the opt-in hotpath feature).

New labels follow the crate's established agent_hosts.<area>.<verb> convention (as in agents/mod.rs). No existing #[hotpath::measure] was restamped; tracedecay-hooks and tracedecay-host-integration are untouched.

Instrumented call sites

• ports/hook_runtime.rs (was no-hp): daemon_tool_json, resolve_project_root_with_identity, resolve_hook_scope, notify_hook_event, is_project_initialized (fs-backed fallback), resolve_store_layout — agent_hosts.hook_runtime.*. Register setters and pure gate getters skipped.
• hooks/daemon_ports.rs (was no-hp): daemon_admission_response decode, timed_daemon_hook_action, DaemonDeliveryReceiptPort::post_receipt, DaemonOpenCodeLspUpdatePort::submit_updated_event — agent_hosts.hook_ports.*. Boxed-future trait methods (try_admit_async, deliver_hook_v2) are not fn-level measurable without measuring only future construction; their inner daemon round trip is already covered by hosts.hooks.daemon_action plus the helpers above.
• hooks/kiro.rs (was no-hp): hook_kiro_pre_tool_use, hook_kiro_prompt_submit, hook_kiro_post_tool_use — agent_hosts.hooks.kiro.*.
• hooks/cursor_compact.rs (was no-hp): cursor_pre_compact_via_daemon_with_telemetry — agent_hosts.hooks.cursor.compact_via_daemon (the thin pub wrapper is skipped to avoid double counting).
• agents/context_scout_model.rs (was no-hp): context_scout_model_assistant_from_automation_config (includes the backend availability probe), backend_request, response_to_proposal — agent_hosts.context_scout.*. Trivial mappers/schema/cost helpers skipped; propose returns a boxed future whose blocking backend work runs in spawn_blocking.
• hooks/mod.rs (add-missing only): dispatch_kimi_event, dispatch_opencode_event, dispatch_opencode_tool_after — agent_hosts.hooks.dispatch_*.
• native_integration/store.rs (add-missing only): all 18 actor round-trip operations on DaemonNativeIntegrationStore (save_approval/read_approval plus the full NativeIntegrationStore trait impl) — agent_hosts.native_store.*. submit/await_reply internals, shutdown, the long-lived run_store_actor loop, and the pure-delegation SharedDaemonNativeIntegrationStore wrappers are skipped.

agents/host_bundle_v2.rs trivia intentionally skipped per plan/evidence.

Verification

• cargo check -p tracedecay-agent-hosts — passes (default features, macros no-op).
• cargo check -p tracedecay-agent-hosts --features hotpath — passes (instrumentation expanded).
• cargo test -p tracedecay-agent-hosts — 603 passed, 2 failed. Both failures (native_integration::journey_tests::{foreign_destination_ref_drift_terminates_without_mutating_the_foreign_tip, independent_pair_applies_supported_modes_and_survives_daemon_restart}) fail identically on the unmodified base commit 10403bb2d of the feat: TraceDecay V2 delivery (PR8–PR13) + daemon performance, memory, and reliability overhaul #707 branch (SigningRequired / preview-approval contract), so they are pre-existing on the base and unrelated to this attribute-only diff.
• Commit subject passes commitlint; remaining lint:commit failures on this branch come from pre-existing merge: subjects already on the feat: TraceDecay V2 delivery (PR8–PR13) + daemon performance, memory, and reliability overhaul #707 base branch.

Do not merge #707 as part of this PR; this targets it as base only.

  

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[github-actions]

Performance Comparison codex/tracedecay-total-redesign-plan-reopened → cursor/hp-hosts-dispatch-store-gaps-b158

Total Elapsed Time: 5.79s → 5.16s (-10.9%)
CPU Baseline: 80.98µs → 84.88µs (+4.8%)
Benchmark ID: index-bench-timing

timing - Execution duration of functions.

+--------------------------------------------------------------+----------------------------+---------------------------------+----------------------------------+----------------------------------+------------------------------+
| Function                                                     | Calls                      | Avg                             | P95                              | Total                            | % Total                      |
+--------------------------------------------------------------+----------------------------+---------------------------------+----------------------------------+----------------------------------+------------------------------+
| tracedecay-index-bench                                       | 1 → 1 (+0.0%)              | 5.79s → 5.16s (-10.9%)          | 5.80s → 5.16s (-11.0%)           | 5.79s → 5.16s (-10.9%)           | 100.00% → 100.00% (+0.0%)    |
+--------------------------------------------------------------+----------------------------+---------------------------------+----------------------------------+----------------------------------+------------------------------+
| query.artifact.append_pages                                  | 13 → 13 (+0.0%)            | 199.91ms → 182.28ms (-8.8%)     | 275.51ms → 246.81ms (-10.4%)     | 2.60s → 2.37s (-8.8%)            | 44.86% → 45.93% (+2.4%)      |
+--------------------------------------------------------------+----------------------------+---------------------------------+----------------------------------+----------------------------------+------------------------------+
| query.artifact.batch.sqlite                                  | 13 → 13 (+0.0%)            | 127.87ms → 125.82ms (-1.6%)     | 178.52ms → 170.39ms (-4.6%)      | 1.66s → 1.64s (-1.2%)            | 28.70% → 31.70% (+10.5%)     |
+--------------------------------------------------------------+----------------------------+---------------------------------+----------------------------------+----------------------------------+------------------------------+
| query.artifact.batch.postings                                | 13 → 13 (+0.0%)            | 110.55ms → 108.48ms (-1.9%)     | 156.11ms → 149.42ms (-4.3%)      | 1.44s → 1.41s (-2.1%)            | 24.81% → 27.33% (+10.2%)     |
+--------------------------------------------------------------+----------------------------+---------------------------------+----------------------------------+----------------------------------+------------------------------+
| CodeIndexProductionOwnerV1::extract_file                     | 276 → 276 (+0.0%)          | 5.36ms → 4.85ms (-9.5%)         | 10.15ms → 7.52ms (-25.9%) 🚀     | 1.48s → 1.34s (-9.5%)            | 25.55% → 25.92% (+1.4%)      |
+--------------------------------------------------------------+----------------------------+---------------------------------+----------------------------------+----------------------------------+------------------------------+
| code_index.workers.install                                   | 83 → 83 (+0.0%)            | 19.18ms → 15.71ms (-18.1%)      | 71.37ms → 53.48ms (-25.1%) 🚀    | 1.59s → 1.30s (-18.2%)           | 27.48% → 25.28% (-8.0%)      |
+--------------------------------------------------------------+----------------------------+---------------------------------+----------------------------------+----------------------------------+------------------------------+
| code_index.build.and_publish                                 | 2 → 2 (+0.0%)              | 540.09ms → 522.99ms (-3.2%)     | 569.38ms → 535.30ms (-6.0%)      | 1.08s → 1.05s (-2.8%)            | 18.65% → 20.27% (+8.7%)      |
+--------------------------------------------------------------+----------------------------+---------------------------------+----------------------------------+----------------------------------+------------------------------+
| domain.canonical.sha256                                      | 114526 → 114526 (+0.0%)    | 9.44µs → 9.01µs (-4.6%)         | 15.13µs → 15.08µs (-0.3%)        | 1.08s → 1.03s (-4.6%)            | 18.67% → 20.01% (+7.2%)      |
+--------------------------------------------------------------+----------------------------+---------------------------------+----------------------------------+----------------------------------+------------------------------+
| query.artifact.finalization.advance_wake                     | 14 → 14 (+0.0%)            | 76.18ms → 56.76ms (-25.5%) 🚀   | 482.08ms → 275.25ms (-42.9%) 🚀  | 1.07s → 794.70ms (-25.7%) 🚀     | 18.41% → 15.40% (-16.3%)     |
+--------------------------------------------------------------+----------------------------+---------------------------------+----------------------------------+----------------------------------+------------------------------+
| code_index.chunk.index_file                                  | 276 → 276 (+0.0%)          | 2.47ms → 2.25ms (-8.9%)         | 5.38ms → 3.35ms (-37.7%) 🚀      | 682.13ms → 620.15ms (-9.1%)      | 11.78% → 12.02% (+2.0%)      |
+--------------------------------------------------------------+----------------------------+---------------------------------+----------------------------------+----------------------------------+------------------------------+
| query.artifact.prepare_pages                                 | 13 → 13 (+0.0%)            | 61.30ms → 47.15ms (-23.1%) 🚀   | 88.41ms → 68.35ms (-22.7%) 🚀    | 796.93ms → 612.99ms (-23.1%) 🚀  | 13.76% → 11.88% (-13.7%)     |
+--------------------------------------------------------------+----------------------------+---------------------------------+----------------------------------+----------------------------------+------------------------------+
| code_index.extract.parser_artifact                           | 276 → 276 (+0.0%)          | 2.28ms → 2.07ms (-9.2%)         | 5.03ms → 3.09ms (-38.6%) 🚀      | 629.39ms → 571.46ms (-9.2%)      | 10.87% → 11.08% (+1.9%)      |
+--------------------------------------------------------------+----------------------------+---------------------------------+----------------------------------+----------------------------------+------------------------------+
| query.artifact.batch.parallel_prepare                        | 13 → 13 (+0.0%)            | 49.98ms → 36.94ms (-26.1%) 🚀   | 73.53ms → 53.48ms (-27.3%) 🚀    | 649.75ms → 480.25ms (-26.1%) 🚀  | 11.22% → 9.31% (-17.0%)      |
+--------------------------------------------------------------+----------------------------+---------------------------------+----------------------------------+----------------------------------+------------------------------+
| code_index.chunk.build                                       | 276 → 276 (+0.0%)          | 1.50ms → 1.38ms (-8.0%)         | 2.56ms → 1.98ms (-22.7%) 🚀      | 414.88ms → 380.05ms (-8.4%)      | 7.16% → 7.37% (+2.9%)        |
+--------------------------------------------------------------+----------------------------+---------------------------------+----------------------------------+----------------------------------+------------------------------+
| 🆕 code_index.build.assemble                                 | 0 → 2 (+100.0%) ⚠️         | 0.00ns → 188.28ms (+100.0%) ⚠️  | 0.00ns → 197.00ms (+100.0%) ⚠️   | 0.00ns → 376.57ms (+100.0%) ⚠️   | 0.00% → 7.30% (+100.0%) ⚠️   |
+--------------------------------------------------------------+----------------------------+---------------------------------+----------------------------------+----------------------------------+------------------------------+
| 🗑️ query.artifact.finalization.index.ngram_postings_by_ngram | 1 → 0 (-100.0%) 🚀         | 469.86ms → 0.00ns (-100.0%) 🚀  | 470.02ms → 0.00ns (-100.0%) 🚀   | 469.86ms → 0.00ns (-100.0%) 🚀   | 8.11% → 0.00% (-100.0%) 🚀   |
+--------------------------------------------------------------+----------------------------+---------------------------------+----------------------------------+----------------------------------+------------------------------+

---

Generated with hotpath-rs

[ScriptedAlchemy]

Integrated into codex/tracedecay-total-redesign-plan-reopened.

Review evidence:

• Original commit b10f8e5eec96877427ddd73392f8d58b44b3061a changes only tracedecay-agent-hosts: 38 #[hotpath::measure(...)] annotations across 7 files, with no semantic behavior changes.
• Unresolved review threads: none.
• cargo test -p tracedecay-agent-hosts --locked -- --test-threads=1 — passed (cargo-hauler ticket cc-1904).
• cargo check -p tracedecay-agent-hosts --features hotpath --locked — passed (ticket cc-1903).
• cargo check -p tracedecay --no-default-features --locked — passed (ticket cc-1905; pre-existing warnings only).
• git diff --check — passed.

PR merge commit: 74ac47a008ec33d276d54d9b01e5aa96513ca66b
Published integration tip after merging the latest target: c7a9758841080463fbac657a3e8e0a5f661e197a.