feat(memory): SleepGate forgetting pass + performance-floor compression predictor#2614
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feat(memory): SleepGate forgetting pass + performance-floor compression predictor#2614
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…on predictor Implements two memory quality improvements: 1. SleepGate forgetting sweep (#2397) - Three-phase consolidation step: synaptic downscaling, selective replay, targeted pruning — all within a single SQLite transaction - Phase 2 replay scoped to Phase 1 batch IDs to prevent score inflation - Config: [memory.forgetting] with enabled, decay_rate, forgetting_floor, sweep_interval_secs, sweep_batch_size, replay_window_hours, protect_min_access_count fields - Validation at sweep entry: decay_rate in (0.0, 1.0), forgetting_floor in [0.0, 1.0), sweep_interval_secs >= 60 - Background loop in runner.rs alongside eviction/consolidation 2. Compression ratio predictor (#2460) - Linear regression predictor trained on (ratio, probe_score) pairs - select_ratio() finds most aggressive ratio clearing the performance floor - Cold-start fallback when < 10 samples; sliding window of 200 samples - Data pipeline complete; integration into summarization path deferred - Config: [memory.compression.predictor] Migrations: 064 (forgetting index), 065 (predictor tables) — both SQLite and Postgres dialects. Integration: CLI subcommands, TUI commands, --init wizard, --migrate-config steps 7-8, testing playbook, coverage-status rows. Closes #2397, closes #2460
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PostgreSQL stores consolidated as BOOLEAN — the WHERE clause must use NOT consolidated, not consolidated = 0 (SQLite integer comparison).
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Summary
decay_rate ∈ (0.0, 1.0)andsweep_interval_secs ≥ 60to guard against destructive misconfiguration.(compression_ratio, probe_score)pairs, selects the most aggressive ratio that clears thehard_fail_thresholdperformance floor. Cold-start fallback (< 10 samples) returnsNone; caller falls back to default behavior. Data pipeline complete; integration into summarization path is a follow-up.Integration points
[memory.forgetting]and[memory.compression.predictor]zeph memory forgetting-sweep,zeph memory predictor-status/forgetting-sweep,/predictor-statusin command palette--initwizard: prompts for both features (default: disabled)--migrate-config: steps 8 and 9 in migration chain.local/testing/playbooks/sleepgate-compression.mdMigrations
064_forgetting_sweep_index— partial index on(importance_score, last_accessed, deleted_at)for sweep efficiency065_compression_predictor— training data and weight persistence tablesTest plan
cargo nextest run— 7660 passed, 15 skippedcargo clippy -- -D warnings— zero warningscargo +nightly fmt --check— cleanforgetting_enabled = trueand a long conversation to verify sweep fires and prunes stale low-importance messagesCloses #2397
Closes #2460