Summary

• re-center the branch on an MCP-first session_* runtime, with in-process bounded execution, file processing, local indexing/search, and per-root-session corpus storage on Redis/FalkorDB
• keep session continuity and long-term memory split correctly: plugin hooks own canonical root-session resolution, event capture, <session_memory> injection, and native-tool enforcement, while Graphiti stays asynchronous and off the hot path
• harden runtime lifecycle and session-state behavior with shared teardown, temporary-root to canonical-root migration, bounded artifact/corpus overflow handling, and follow-up docs/config cleanup

Key Changes

• register an in-process session_* MCP surface from the plugin runtime: session_execute, session_execute_file, session_batch_execute, session_index, session_search, session_fetch_and_index, session_stats, and session_doctor
• add the local session corpus layer for normalized indexing, bounded search/snippet retrieval, fetched-content ingestion, artifact storage, and per-root-session stats in Redis/FalkorDB
• route large or risky work toward the MCP-first path via tool.execute.before / tool.execute.after, including native-tool guidance, argument rewriting, denial paths, and routing outcome metadata
• preserve shared session state across parent/child and temporary/canonical root transitions by wiring runtime-state migration through SessionManager, the session MCP runtime, and corpus storage
• retain the Redis-backed short-term memory + async Graphiti model: hot-path injection remains local/cache-backed, while Graphiti drain and cache refresh stay background-only
• refresh README/plans/tests to describe the MCP-first architecture, local-first injection semantics, Graphiti-optional behavior, and current validation surface
• update release workflow behavior in .github/workflows/publish.yml and .github/scripts/version.ts so publish gating, skip behavior, and tag/release creation stay consistent and idempotent even when npm publish is skipped

Testing

• add and expand focused Deno coverage for the MCP runtime, corpus, routing, runtime teardown, session migration, and hook integration paths
• covered suites now include src/services/session-mcp-runtime.test.ts, src/services/session-corpus.test.ts, src/services/tool-routing.test.ts, src/services/tool-guidance-cache.test.ts, src/services/tool-routing-outcome-cache.test.ts, src/handlers/tool-before.test.ts, src/handlers/tool-after.test.ts, src/session.test.ts, and related index/handler/service tests
• release/versioning coverage includes .github/scripts/version.test.ts

Notes

• this PR is no longer just the original Redis hot-tier rewrite; it now reflects the follow-up MCP-first replacement work and the later hardening passes on runtime lifecycle, corpus behavior, root-session migration, and release workflow handling
• current docs intentionally describe hooks as enforcement/continuity plumbing, not the primary execution surface; the primary path is the in-process session_* MCP runtime