refactor(effect): migrate mate memory runtime

[robinbraemer]

Outcome

Migrates the remaining Mate-memory graph to typed Effect programs while preserving Pi host contracts, native file formats, pause-generation semantics, bounded recall, extraction, and Dream coordination.

Closes #98.
Progresses #102.

What changed

• Replaced raw filesystem, crypto, JSON/YAML, Promise orchestration, timers, and thrown failures in memory schema/store/activity, relevance selection, maintenance, and the Pi extension with Effect services, Schema, scoped handles, Fibers, and typed errors.
• Made pause/mutation guards lazy at execution time so a pause racing a final filesystem commit fails closed.
• Preserved bounded index/topic/activity loading, symlink defenses, native edit validation/stamping, pending-capacity reservations, redaction, telemetry attribution, Dream locking, and lock ownership.
• Exposed createMateMemoryStoreEffect; retained the existing published Promise shape only through the single reviewed shared legacy host adapter for not-yet-migrated executable consumers.
• Replaced five Promise/Bun suites with five @effect/vitest suites and removed eleven stale baseline entries.
• Added the memory suites to the repository-wide Effect test gate.

Verification

• bun run effect:check — 411 TypeScript paths assigned; no violations
• bun run build
• bun run typecheck
• bun run effect:test — 61 files, 344 tests
• bun run effect:bun:test — 2 files, 6 tests
• bun run site:test — 27 files, 114 tests
• broader legacy test phase completed successfully before the Effect and site phases
• git diff --check

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Status	Name	Latest Commit	Updated (UTC)
❌ Deployment failed View logs	agentos-site	c43acfa	Aug 02 2026, 12:37 AM