ForgeLM/.planning/phases/02-lifecycle-command-safety/02-01-SUMMARY.md

phase, plan, subsystem, tags, requires, provides, affects, tech-stack, key-files, key-decisions, patterns-established, requirements-completed, duration, completed

phase	plan	subsystem	tags	requires	provides	affects	tech-stack	key-files	key-decisions	patterns-established	requirements-completed	duration	completed
02-lifecycle-command-safety	01	runtime	tauri rust lifecycle runtime desktop	phase provides 01-draft-state-ownership runtime draft/live separation that lifecycle metadata now extends without clobbering edits	explicit runtime snapshot lifecycle command metadata backend guards for conflicting local runtime start and stop requests restart-required save guidance aligned to backend-owned runtime fields	phase-02-02 phase-02-03 runtime-workspace	added patterns snapshot lifecycle transport centralized runtime command guards	created modified tauri-app/src-tauri/src/runtime/types.rs tauri-app/src-tauri/src/runtime/state.rs tauri-app/src-tauri/src/runtime/mod.rs	Expose active and last lifecycle command data on RuntimeSnapshot so frontend polling can render trustworthy lifecycle feedback without inferring from status alone. Centralize duplicate start/stop blocking in runtime state helpers so save, start, and stop flows share the same command-result contract. Keep restart-required save enforcement limited to connection_mode, model_path, addr, gpu_layers, and ctx_size to stay aligned with the existing backend runtime boundary.	RuntimeSnapshot includes active_command plus last_command_result for stable in-flight and terminal lifecycle messaging. Lifecycle commands update terminal outcomes through helper functions instead of ad-hoc last_error-only handling.	CTRL-01 CTRL-03	6min	2026-03-29

Phase 2 Plan 01: Lifecycle Command Safety Summary

Runtime snapshot lifecycle metadata and guarded local start/stop/save outcomes at the Tauri runtime boundary

Performance

• Duration: 6 min
• Started: 2026-03-29T03:45:48Z
• Completed: 2026-03-29T03:51:43Z
• Tasks: 2
• Files modified: 3

Accomplishments

• Added serialized lifecycle command metadata to RuntimeSnapshot so backend snapshots now report both the active command and the last completed command result.
• Centralized lifecycle result helpers and guard rules in runtime state so duplicate start/stop requests return stable blocked messages instead of silent no-ops.
• Routed restart-required saves and lifecycle success/failure paths through one command-result contract while preserving the existing backend restart-impact field list.

Task Commits

Each task was committed atomically:

1. Task 1: Add explicit lifecycle command metadata to the runtime snapshot - 217e265 (test)
2. Task 1: Add explicit lifecycle command metadata to the runtime snapshot - cf73eb2 (feat)
3. Task 2: Guard conflicting lifecycle commands and preserve restart-impacting save rules - 581b81b (test)
4. Task 2: Guard conflicting lifecycle commands and preserve restart-impacting save rules - 67651bf (feat)

Files Created/Modified

• tauri-app/src-tauri/src/runtime/types.rs - defines lifecycle command and result payloads on runtime snapshots.
• tauri-app/src-tauri/src/runtime/state.rs - stores lifecycle metadata, shared guard helpers, and regression tests for blocked command behavior.
• tauri-app/src-tauri/src/runtime/mod.rs - applies guard helpers to save/start/stop commands and records consistent lifecycle outcomes.

Decisions Made

• Used snapshot-level lifecycle transport instead of separate command-specific responses so existing polling consumers can adopt the new contract incrementally.
• Kept blocked lifecycle feedback in last_command_result while reserving last_error for actual runtime failures such as restart-required, spawn, health, and stop failures.
• Preserved the restart-required field list exactly as planned and covered non-restart fields with regression tests.

Deviations from Plan

Auto-fixed Issues

1. [Rule 1 - Bug] Cleared latched active commands when config persistence fails

• Found during: Task 2 (Guard conflicting lifecycle commands and preserve restart-impacting save rules)
• Issue: Beginning a save or save-and-start command before persisting config could leave active_command stuck if save_runtime_config returned an error.
• Fix: Added failure handling that records a failed lifecycle result, stores save_failed, and exits without leaving the runtime in an in-flight command state.
• Files modified: tauri-app/src-tauri/src/runtime/mod.rs
• Verification: cargo test --manifest-path "tauri-app/src-tauri/Cargo.toml" runtime:: and cargo check --manifest-path "tauri-app/src-tauri/Cargo.toml"
• Committed in: 67651bf (part of task commit)

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Total deviations: 1 auto-fixed (1 bug) Impact on plan: The auto-fix kept the new lifecycle contract trustworthy under save failures without expanding scope beyond the planned backend boundary.

Issues Encountered

• The plan's verification command used cargo test -p tauri-app runtime::, but the Tauri crate is named forgelm-chat; verification succeeded via cargo test --manifest-path "tauri-app/src-tauri/Cargo.toml" runtime::.

User Setup Required

None - no external service configuration required.

Next Phase Readiness

• Frontend lifecycle manager work can now read active_command and last_command_result directly from runtime snapshots.
• Restart/apply UI work can rely on the backend restart-required contract staying limited to connection_mode, model_path, addr, gpu_layers, and ctx_size.

Self-Check: PASSED

• Summary file exists at .planning/phases/02-lifecycle-command-safety/02-01-SUMMARY.md.
• Verified commit hashes 217e265, cf73eb2, 581b81b, and 67651bf are present in git history.

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Phase: 02-lifecycle-command-safety Completed: 2026-03-29