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homelab/.planning/phases/03-lifecycle-management/03-01-SUMMARY.md
Mikkel Georgsen a7d0f4515f docs(03-01): complete idle timer foundation plan 
Tasks completed: 2/2
- Created SessionIdleTimer module with asyncio-based timeout detection
- Extended session metadata with idle_timeout field and PID tracking

SUMMARY: .planning/phases/03-lifecycle-management/03-01-SUMMARY.md
2026-02-04 23:30:28 +00:00

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phase plan subsystem tags requires provides affects tech-stack key-files key-decisions patterns-established duration completed
03-lifecycle-management 01 infra
asyncio
python
session-management
lifecycle
phase provides
02-telegram-integration Session management and persistent subprocess architecture
SessionIdleTimer class for per-session timeout detection
Session metadata with idle_timeout field for lifecycle configuration
ClaudeSubprocess.pid property for process tracking
03-lifecycle-management
added patterns
Asyncio-based timer with reset() cancellation pattern
Session metadata defaults for configurable behavior
created modified
telegram/idle_timer.py
telegram/session_manager.py
telegram/claude_subprocess.py
Default 600s (10 min) idle timeout per session
Timer reset via task cancellation + new task creation
PID property returns live process ID only (None if terminated)
Timer pattern: cancel existing task, create new background sleep task
Metadata defaults: provide sensible values in create_session()
2min 2026-02-04

Phase 03 Plan 01: Idle Timer Foundation Summary

Asyncio-based per-session idle timer with configurable timeout metadata and subprocess PID tracking

Performance

  • Duration: 2 min
  • Started: 2026-02-04T23:27:29Z
  • Completed: 2026-02-04T23:29:00Z
  • Tasks: 2
  • Files modified: 3

Accomplishments

  • Created SessionIdleTimer class with asyncio timer management
  • Extended session metadata to include idle_timeout field (default 600s)
  • Added PID property to ClaudeSubprocess for process tracking
  • Foundation ready for suspend/resume lifecycle implementation

Task Commits

Each task was committed atomically:

  1. Task 1: Create SessionIdleTimer module - 488d94e (feat)
  2. Task 2: Extend session metadata and subprocess PID tracking - 74f12a1 (feat)

Files Created/Modified

  • telegram/idle_timer.py - SessionIdleTimer class with reset(), cancel(), and activity tracking properties
  • telegram/session_manager.py - Added idle_timeout to metadata, get_session_timeout() helper method
  • telegram/claude_subprocess.py - Added pid property returning live process ID

Decisions Made

  • Default idle timeout: 600 seconds (10 minutes) - balances responsiveness with resource conservation
  • Timer reset pattern: Cancel existing asyncio task and create new one (clean slate approach)
  • PID property returns None for terminated processes - prevents stale PID references

Deviations from Plan

None - plan executed exactly as written.

Issues Encountered

None

User Setup Required

None - no external service configuration required.

Next Phase Readiness

Ready for next plan (03-02: Suspend/Resume Implementation):

  • Idle timer module complete and tested
  • Session metadata supports timeout configuration
  • Subprocess exposes PID for lifecycle tracking
  • All imports verified, no blockers

Phase: 03-lifecycle-management Completed: 2026-02-04