jordan eca7765e8d fix: heal_region re-delivers missed WAL batches so partitioned followers converge immediately after heal

- Extract redeliver_missed(tx, db, log) helper into cluster_transport.rs
- heal_region now removes partition then immediately ships any missed
  batch-log entries to the healed follower's channel
- await_convergence refactored to call the same helper (no logic change)
- tidal-server: reload_text_index before search in cluster mode
- tidal-server: write_signal returns Result instead of panicking on unknown signal
- tidal-server: leader shows lag_events=0 (writes directly, no receiver thread)
- tidal-server: fix cluster mode error propagation (ServerError::from)
- docs/runbooks/cluster.md: add full cluster operations runbook
- docker/: add Dockerfile for containerised cluster deployment
- README.md: add tidal-server HTTP API getting-started section
- Split oversized source files per CODING_GUIDELINES §9

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

2026-02-25 11:57:01 -07:00

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iknowyou-engine

iknowyou-engine moves personalization state into embedded tidalDB and keeps Synap optional for auxiliary observation memory.

What this crate covers

User/item state and ranking signals in tidalDB
Session lifecycle and session-scoped signals (start_session / session_signal / close_session)
Hard negatives (hide, mute, block) written as durable relationships for replay-safe filtering
PG1 evaluator (run_pg1_eval) for:
- hard-negative leak rate
- adaptation latency p95
- useful-item uplift vs baseline
- repeated-unwanted-item rate

Run the PG1 evaluator

cargo run -p iknowyou-engine --bin pg1_eval

Optional persistent path:

cargo run -p iknowyou-engine --bin pg1_eval /tmp/iknowyou-pg1

Run the HTTP server

cargo run -p iknowyou-engine --bin server --features synap-aux

Server defaults:

bind: 127.0.0.1:7777
data dir: ${TMPDIR}/iknowyou_engine_data

Override with:

IKY_ENGINE_BIND
IKY_ENGINE_DATA_DIR

Optional Synap auxiliary memory

Enable synap-aux to use SynapAuxMemory for observation storage while keeping core personalization in tidalDB.

cargo test -p iknowyou-engine --features synap-aux

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