Summary

• Add mem::session-reap to detect and recover abandoned active sessions after abrupt exits.
• Expose recovery through POST /agentmemory/sessions/reap, agentmemory reap, startup reconciliation, optional interval reconciliation, diagnostics, and heal.
• Update endpoint-count docs, env docs, generated plugin references, and task-state records.

Closes #298.

Verification

• corepack pnpm exec vitest run test/api-boundary-coverage.test.ts test/cli-http-auth.test.ts
• corepack pnpm exec vitest run test/session-reaper.test.ts test/session-reaper-scheduler.test.ts test/api-boundary-coverage.test.ts test/cli-http-auth.test.ts test/session-end-triggers-graph.test.ts test/diagnostics.test.ts
• corepack pnpm run lint
• corepack pnpm run build
• corepack pnpm test
• corepack pnpm run skills:check
• git diff --cached --check
• semgrep scan --config p/default --error --metrics=off .
• semgrep scan --config p/default --error --metrics=off src/functions/session-reaper.ts src/functions/session-reaper-scheduler.ts test/session-reaper.test.ts test/session-reaper-scheduler.test.ts
• gitleaks protect --staged --redact