fix(signals): OBSERVE.exclude covers store nodes and interaction writes

[ryansolid]

What

OBSERVE.exclude(owner) now covers writes and stores, not only runs and diagnostics:

• Store nodes are excluded subjects. registerGraph(proxy, owner) never landed on a store: the proxy's set trap swallows writes outside a draft, so isExcluded(storeNode) was always false. The root target now keys its creating owner (a WeakMap, one set per createStore) and the store's nodes (value, presence, key-set, deep) copy it into _owner as they are created — under the same attrHooks !== null gate as node naming, so node creation's disabled cost stays one null check. registerGraph still runs for the dev tier's owner signal lists / onGraph.
• Excluded writes don't count toward an interaction. stampWrite routes a root write to an excluded subject into InteractionState.excludedWrites instead of event.writes.
• An interaction that only touched the observer is forgotten. writes 0, runs 0, created 0, excludedWrites > 0 at settle → removed from the ring, never delivered on subscribe("interaction"). An idle click that wrote nothing at all is still recorded (that's a fact about the app).

Why

Found by the Sentry spike's record-driven adapter (rewritten on the rc.8 subscribe(type) channel): clicking the panel's own "clear" button produced a ui.interaction.click transaction with writes 1, runs 0, even with the panel root excluded and the write made under runWithOwner(panelOwner). The documented contract is that the engine records nothing about the observer's own subtree; this closes the two paths that leaked.

Adapter-side consequence, now in the doc paragraph: the store must be created under the excluded owner, not only written under it.

Size

Engine scenario 26888 → 26944 B (+56 B), limit 26.92 → 26.98 KB with a note. The observe CSR scenario did not move (no observe scenario bundles stores); prod tiers are __OBSERVE__-gated and unchanged.

Tests

• observe-exclude.test.ts: "forgets an interaction whose only writes went to the panel's own store" — fails without the change (record present, outcome: idle), passes with it; also asserts a click that writes the app and the panel is recorded with writes 1.
• signals 1752 / solid-js 595 / web 734 pass.

Companion router fix from the same spike run: solidjs/solid-router#604 (guard redirect in the landing flush recorded as a hop, RouterIntegration.inflight).

[changeset-bot]

🦋 Changeset detected

Latest commit: 2daff9c

The changes in this PR will be included in the next version bump.

This PR includes changesets to release 11 packages

Name	Type
@solidjs/signals	Patch
test-integration	Patch
@solidjs/web	Patch
@solidjs/babel-plugin	Patch
@solidjs/compiler	Patch
@solidjs/diagnostics	Patch
@solidjs/element	Patch
@solidjs/h	Patch
@solidjs/html	Patch
solid-js	Patch
@solidjs/universal	Patch

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[coveralls]

Coverage Report for CI Build 34682058256

Coverage remained the same at 71.842%

Details

• Coverage remained the same as the base build.
• Patch coverage: No coverable lines changed in this PR.
• No coverage regressions found.

Uncovered Changes

No uncovered changes found.

Coverage Regressions

No coverage regressions found.

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Coverage Stats

Relevant Lines:	1007
Covered Lines:	772
Line Coverage:	76.66%
Relevant Branches:	790
Covered Branches:	519
Branch Coverage:	65.7%
Branches in Coverage %:	Yes
Coverage Strength:	15.03 hits per line

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💛 - Coveralls

[codspeed-hq]

Merging this PR will regress 1 benchmark

⚡ 1 improved benchmark
❌ 1 regressed benchmark
✅ 158 untouched benchmarks

Warning

Please fix the performance issues or acknowledge them on CodSpeed.

Performance Changes

	Benchmark	BASE	HEAD	Efficiency
❌	fresh stores: create + first write + first commit (reporter shape)	17.4 ms	19.7 ms	-11.67%
⚡	store reconcile tree reverse: 1111 keyed nodes	29 ms	24.8 ms	+16.93%

Tip

Investigate this regression by commenting @codspeedbot fix this regression on this PR, or directly use the CodSpeed MCP with your agent.

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_{Comparing observe-exclude-writes (2daff9c) with next (344ed05)}