refactor(daemon): move session observability behind facade

[thymikee]

Summary

Move the perf, logs, events, network, and audio session routes behind the named observability facade while retaining SessionStore-owned live state, existing admission/resource owners, and exact response behavior.

Closes #2176

Validation

• Evidence head: 1b92b012574e2f420be12802cca7458bfd489098.
• Focused observability/resource suites: 12 files, 107 tests passed.
• pnpm check:layering: 183 tests passed; full guard clean.
• pnpm check:fallow --base origin/main: no issues in 37 changed files.
• pnpm check:affected --run: format, lint, typecheck, layering, DI, Fallow, metadata, build, package, Node integration, and macOS coverage lanes passed. The related-test phase had 6 host-load failures with 2,248/2,254 tests passing. The mutation-model self-test independently reproduces 3 current-main registry failures; the clean-main comparison reproduces the 4 iOS/interaction timeout failures.
• Move-adjusted production size: 119,268 → 119,267 lines (-1).

[github-actions]

Size Report

Metric	Base	Current	Diff
JS raw	2.55 MB	2.55 MB	-138 B
JS gzip	857.4 kB	857.3 kB	-139 B
npm tarball	981.9 kB	981.8 kB	-85 B
npm unpacked	3.39 MB	3.39 MB	-138 B

npm unpacked components

Component	Base	Current	Diff
JS / dist source	2.71 MB	2.71 MB	-138 B
Apple runner source/project	581.2 kB	581.2 kB	0 B
macOS helper source	54.8 kB	54.8 kB	0 B
Android helper artifacts	0 B	0 B	0 B
Other package files	45.7 kB	45.7 kB	0 B

Startup median (7 runs, lower is better):

Scenario	Base	Current	Diff
CLI --version	30.0 ms	30.4 ms	+0.4 ms
CLI --help	79.1 ms	80.4 ms	+1.3 ms

Top changed chunks:

Chunk	Raw diff	Gzip diff
dist/src/session-store.js	+153 B	+47 B
dist/src/session2.js	-36 B	-11 B

Top changed packed files

Packed file	Base	Current	Diff
dist/src/handler-utils.js	186 B	0 B	-186 B
dist/src/session-store.js	40.6 kB	40.7 kB	+153 B
dist/src/record-trace.js	1.8 kB	1.8 kB	-42 B
dist/src/session2.js	217.7 kB	217.7 kB	-36 B
dist/src/find.js	7.2 kB	7.2 kB	-27 B

[thymikee]

Reviewed exact head 1b92b012574e2f420be12802cca7458bfd489098: no code or architecture findings. The facade is a real ownership boundary, not forwarding ceremony: routing imports one narrow capability input, observability owns family dispatch/composition, specialized operations remain private, store-owned state and admission/resource owners are preserved, and anti-regrowth/deep-import gates are meaningful. All exact-head CI is green and move-adjusted production LOC is -1. BLOCKED only on the readiness record: stamp the PR body’s Validation with this exact head so the local/fallow/affected evidence and documented host-load noise are tied to a named commit.

[thymikee]

Addressed: added the exact validated head 1b92b01 to the PR Validation section, tying the local, Fallow, and affected evidence to this commit.

[thymikee]

Re-reviewed exact head 1b92b012574e2f420be12802cca7458bfd489098: the sole readiness-record blocker is resolved. Validation now stamps this exact head and ties the focused, layering, Fallow, affected, and host-load comparison evidence to it. Code/architecture remain clean, all exact-head CI and iOS/Android/macOS/Linux Smoke lanes pass, package size is -138 B, and move-adjusted production is -1 LOC. READY for human review and merge.

[github-actions]

PR Preview Action v1.8.1
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2026-09-01 14:39 UTC