Logging Skill

Unified logging infrastructure providing script execution logging, semantic work progress tracking, and decision logging.

Overview

This skill provides a single unified API for three logging concerns:

1. Script Execution Logging: Tracking of script executor invocations (type: script)
2. Work Logging: Semantic tracking of work progress (type: work)
3. Decision Logging: Tracking of decisions made during execution (type: decision)

Log Files

All plan-scoped logs are stored in the logs/ subdirectory of the plan.

Script Execution Log

File: .plan/plans/{plan-id}/logs/script-execution.log (plan-scoped)
Fallback: .plan/logs/script-execution-YYYY-MM-DD.log (global)

Work Log

File: .plan/plans/{plan-id}/logs/work.log
Fallback: .plan/logs/work-YYYY-MM-DD.log (global)

Decision Log

File: .plan/plans/{plan-id}/logs/decision.log
Fallback: .plan/logs/decision-YYYY-MM-DD.log (global)

---

CLI Script Usage

Script: plan-marshall:manage-logging:manage-log

Write API

python3 .plan/execute-script.py plan-marshall:manage-logging:manage-log \
  {type} --plan-id {plan_id} --level {level} --message "{message}"

Arguments:

Argument	Values	Description
type	script, work, decision	Log type (determines output file)
--plan-id	kebab-case	Plan identifier
--level	INFO, WARN, ERROR	Log level
--message	string	Log message

Output: None (exit code only)

Separator API

python3 .plan/execute-script.py plan-marshall:manage-logging:manage-log \
  separator --plan-id {plan_id} [--type {work|script|decision}]

Arguments:

Argument	Required	Default	Description
--plan-id	Yes	-	Plan identifier
--type	No	work	Log type: work, script, or decision

Output: None (appends a blank line to the log file for visual separation between phases)

Read API

python3 .plan/execute-script.py plan-marshall:manage-logging:manage-log \
  read --plan-id {plan_id} --type {work|script|decision} [--limit N] [--phase PHASE]

Arguments:

Argument	Required	Description
--plan-id	Yes	Plan identifier
--type	Yes	Log type: work, script, or decision
--limit	No	Max entries to return (most recent)
--phase	No	Filter by phase (work/decision logs only)

Output (TOON):

status: success
plan_id: my-plan
log_type: work
total_entries: 5
showing: 3

entries:
  - timestamp: 2025-12-11T11:14:30Z
    level: INFO
    hash_id: c8d3e2
    message: [STATUS] (plan-marshall:phase-1-init) Starting init phase
    phase: 1-init
  - timestamp: 2025-12-11T11:15:20Z
    level: INFO
    hash_id: f1a9b3
    message: [ARTIFACT] (plan-marshall:phase-1-init) Created deliverable: auth module

Examples

# Write: Script execution logging
python3 .plan/execute-script.py plan-marshall:manage-logging:manage-log \
  script --plan-id my-plan --level INFO --message "plan-marshall:manage-task:manage-task add (0.15s)"

python3 .plan/execute-script.py plan-marshall:manage-logging:manage-log \
  script --plan-id my-plan --level ERROR --message "plan-marshall:manage-task:manage-task add failed (exit 1)"

# Write: Work logging (include [CATEGORY] (caller) prefix)
python3 .plan/execute-script.py plan-marshall:manage-logging:manage-log \
  work --plan-id my-plan --level INFO --message "[ARTIFACT] (plan-marshall:phase-1-init) Created deliverable: auth module"

python3 .plan/execute-script.py plan-marshall:manage-logging:manage-log \
  work --plan-id my-plan --level WARN --message "[STATUS] (plan-marshall:phase-5-execute) Skipped validation step"

# Write: Decision logging (NO [DECISION] prefix - file is the category)
python3 .plan/execute-script.py plan-marshall:manage-logging:manage-log \
  decision --plan-id my-plan --level INFO --message "(plan-marshall:phase-1-init) Detected domain: java - pom.xml found"

python3 .plan/execute-script.py plan-marshall:manage-logging:manage-log \
  decision --plan-id my-plan --level INFO --message "(pm-plugin-development:ext-outline-plugin) Scope: bundles=all"

# Read: All work log entries
python3 .plan/execute-script.py plan-marshall:manage-logging:manage-log \
  read --plan-id my-plan --type work

# Read: All decision log entries
python3 .plan/execute-script.py plan-marshall:manage-logging:manage-log \
  read --plan-id my-plan --type decision

# Read: Last 5 work log entries
python3 .plan/execute-script.py plan-marshall:manage-logging:manage-log \
  read --plan-id my-plan --type work --limit 5

# Read: Work log entries for 1-init phase only
python3 .plan/execute-script.py plan-marshall:manage-logging:manage-log \
  read --plan-id my-plan --type work --phase 1-init

---

Log Format

Standard Entry Structure

[{timestamp}] [{level}] [{hash}] {message}

Every log entry automatically includes a 6-character hash computed from the message content. This provides:

• Transparent ID generation: Callers don't need to compute or track hashes
• Deterministic: Same message always produces the same hash
• Traceability: Findings can be linked across stages (analysis → resolution → Q-gate)

Example Output

script-execution.log:

[2025-12-11T12:14:26Z] [INFO] [a3f2c1] plan-marshall:manage-files:manage-files create (0.19s)
[2025-12-11T12:17:50Z] [ERROR] [b7e4d9] plan-marshall:manage-task:manage-task add failed (exit 1)

work.log:

[2025-12-11T11:14:30Z] [INFO] [c8d3e2] [STATUS] (plan-marshall:phase-1-init) Starting init phase
[2025-12-11T11:15:20Z] [INFO] [f1a9b3] [ARTIFACT] (plan-marshall:phase-1-init) Created deliverable: auth module
[2025-12-11T11:17:30Z] [INFO] [e5c7d4] [PROGRESS] (plan-marshall:phase-5-execute) Task 1 completed

decision.log:

[2025-12-11T11:14:48Z] [INFO] [d2e8f1] (plan-marshall:phase-1-init) Detected domain: java - pom.xml found
[2025-12-11T11:20:15Z] [INFO] [a4b6c8] (pm-plugin-development:ext-outline-plugin) Scope: bundles=all

Note: Decision entries do NOT include a [DECISION] prefix - the file itself indicates the entry type. The hash ID (e.g., [d2e8f1]) is automatically generated from the message content.

Log Levels

Level	Description
INFO	Progress, informational, or successful completion message
WARN	Warning (non-fatal issue)
ERROR	Error with details

---

Python Import (from scripts run via executor)

Scripts run via the executor have PYTHONPATH set up for cross-skill imports:

from plan_logging import log_entry

# Log to global script log
log_entry('script', 'global', 'INFO', '[MY-COMPONENT] Processing started')

# Log to plan-specific log
log_entry('work', 'my-plan', 'INFO', '[ARTIFACT] Created deliverable')

Note: IDE warnings about unresolved imports are expected - PYTHONPATH is set at runtime by the executor.

---

Storage Locations

Plan-Scoped Logs

.plan/plans/{plan-id}/
└── logs/
    ├── script-execution.log    # Script execution tracking
    ├── work.log                # Work progress tracking
    └── decision.log            # Decision tracking

Global Logs

.plan/logs/
├── script-execution-YYYY-MM-DD.log    # Daily global script logs
├── work-YYYY-MM-DD.log                # Daily global work logs (when no plan)
└── decision-YYYY-MM-DD.log            # Daily global decision logs

Scope Selection:

• If plan_id is provided and plan directory exists: plan-scoped log
• Otherwise: global log (both script and work types supported)

---

Environment Variables

Variable	Description	Default
PLAN_BASE_DIR	Base directory for .plan structure	.plan
LOG_MAX_OUTPUT	Max chars to capture from stdout/stderr	2000
LOG_RETENTION_DAYS	Days to keep global logs	7

---

Integration Points

With Script Executor

The executor automatically calls log_script_execution() after each script run.

With Planning Skills

Planning skills call the simplified API:

python3 .plan/execute-script.py plan-marshall:manage-logging:manage-log \
  work --plan-id my-plan --level INFO --message "[ARTIFACT] (plan-marshall:phase-4-plan) Created task: implement auth module"

---

Scripts

Script	Notation	Description
manage-log.py	plan-marshall:manage-logging:manage-log	CLI for logging operations (write and read)
plan_logging.py	-	Python module (imported, not executed)

Script Commands

Command	Parameters	Description
(subcommand)	{type} --plan-id {plan_id} --level {level} --message "{message}"	Write log entry
separator	--plan-id {plan_id} [--type {work|script|decision}]	Add blank line for visual separation
read	--plan-id --type [--limit] [--phase]	Read log entries (TOON output)