feat(phase22): add durable attention foundation

[SuperLogicAI]

Summary

• add the durable, provider-neutral source context needed by the future cross-project Attention inbox
• persist accepted lifecycle observations alongside their deduplicated raw hook events
• retain session, tab, adapter, and actor identity on new blockers, decisions, and result lifecycle events
• prevent subagent terminal events from driving parent state or landing parent results
• mark trusted OpenCode and Antigravity adapter traffic without inferring unknown providers
• add focused attention-state and terminal-result characterization checks

Scope

This is the Phase 22 foundation only. It does not add the Attention palette or rail, ranking, pin/snooze behavior, shared inbox queries, provider transcript expansion, or autonomous terminal input.

Phase 22 is not yet accepted. This PR is intentionally a draft so the implemented and verified work can be reviewed while one provider-specific manual check remains unavailable.

Verification

• npx tsc --noEmit
• npm run check (all 18 registered check scripts)
• npm run build
• cd src-tauri && cargo test --lib (57 passed)
• cd src-tauri && cargo clippy --all-targets -- -D warnings
• git diff --check

The production build retains the existing Vite warning for a JavaScript chunk larger than 500 kB; the build exits successfully.

Manual Phase 22 checks passed for:

• same-project blocker isolation and project-level manual blockers
• decision source context surviving an active-tab switch during extraction
• Codex and OpenCode adapter identity, with unmarked traffic remaining unknown
• late/subagent terminal events not reviving or landing a parent result
• database-write failure remaining fail-open for terminal use

Remaining Before Acceptance

• repeat the adapter-marker check in a real Antigravity session when the weekly Antigravity limit resets

This remaining check is recorded in docs/TESTING.md and is required before PHASE 22 ACCEPTED.