[claude] Keep LcmDebugger run output in timestamped log files

[myieye]

[Claude, autonomous]

Each LcmDebugger run now writes logs/<timestamp>-run.log, and a dry run's records go to logs/<timestamp>-<project>-dry-run-{crdt,fwdata}-records.json instead of the throwaway project copy, where they were deleted along with it. Nothing is pruned, and a failed run logs its exception (unhandled ones only reach stderr, which the file logger never sees).

NReco.Logging.File is already used by FwLiteWeb and FwLiteMaui with its version pinned centrally, so this only adds a reference to it.

[coderabbitai]

📝 Walkthrough

Walkthrough

LcmDebugger now configures file logging, creates timestamped output paths, replaces console messages with structured logs, and writes separate JSON files for CRDT and fwdata dry-run records. FwHeadlessProject also includes the project name.

Changes

LcmDebugger output pipeline

Layer / File(s)	Summary
File logging foundation backend/FwLite/LcmDebugger/RunOutput.cs, backend/FwLite/LcmDebugger/LcmDebugger.csproj, backend/FwLite/LcmDebugger/Program.cs, .gitignore	Adds timestamped, sanitized output paths, configures NReco file logging, and ignores generated logs.
Project lifecycle logging backend/FwLite/LcmDebugger/Utils.cs	Adds the project name to FwHeadlessProject, introduces a named logger, and replaces project initialization console output with structured logging.
Sync and dry-run record output backend/FwLite/LcmDebugger/Utils.cs	Logs synchronization failures and success, and serializes CRDT and fwdata dry-run records to separate indented JSON files.

Estimated code review effort: 3 (Moderate) | ~20 minutes

Suggested reviewers: hahn-kev

Poem

I’m a bunny with logs in a neat little row,
Timestamped paths where the run outputs go.
CRDTs and fwdata hop into JSON,
While structured logs sparkle like dew on a lawn.
“Thump-thump!” says the rabbit—“The debugger can grow!”

🚥 Pre-merge checks | ✅ 5

✅ Passed checks (5 passed)

Check name	Status	Explanation
Title check	✅ Passed	The title clearly matches the main change: timestamped log files for LcmDebugger run output.
Description check	✅ Passed	The description accurately describes the logging and dry-run record file changes in LcmDebugger.
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check.
Linked Issues check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Out of Scope Changes check	✅ Passed	Check skipped because no linked issues were found for this pull request.

✨ Finishing Touches

📝 Generate docstrings

• Create stacked PR
• Commit on current branch

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Commit unit tests in branch lcm-debugger-run-logs

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[coderabbitai]

Actionable comments posted: 1

Caution

Some comments are outside the diff and can’t be posted inline due to platform limitations.

⚠️ Outside diff range comments (1)

backend/FwLite/LcmDebugger/Program.cs (1)

23-29: 🩺 Stability & Availability | 🟠 Major | ⚡ Quick win

Log failures before synchronization starts.

OpenDownloadedProject executes before the catch in SyncFwHeadlessProject, so an open/init failure reaches stderr without being persisted to the run log. Wrap the scoped open-and-sync lifecycle in an application-level catch, log through ILoggerFactory, then rethrow.

🤖 Prompt for AI Agents

Verify each finding against current code. Fix only still-valid issues, skip the
rest with a brief reason, keep changes minimal, and validate.

In `@backend/FwLite/LcmDebugger/Program.cs` around lines 23 - 29, Wrap the scoped
lifecycle containing OpenDownloadedProject and SyncFwHeadlessProject in an
application-level try/catch so failures during project opening or
synchronization are captured before escaping. In the catch, obtain the
application logger through ILoggerFactory, persist the exception details to the
run log, and rethrow the original exception; preserve the existing async scope
and disposal behavior.

🤖 Prompt for all review comments with AI agents

Verify each finding against current code. Fix only still-valid issues, skip the
rest with a brief reason, keep changes minimal, and validate.

Inline comments:
In `@backend/FwLite/LcmDebugger/RunOutput.cs`:
- Around line 11-18: Update the RunStarted identifier used by FilePath to retain
the existing timestamp prefix while appending a process-unique Guid.NewGuid()
suffix in compact format. Keep the current filename sanitization and
log-directory behavior unchanged.

---

Outside diff comments:
In `@backend/FwLite/LcmDebugger/Program.cs`:
- Around line 23-29: Wrap the scoped lifecycle containing OpenDownloadedProject
and SyncFwHeadlessProject in an application-level try/catch so failures during
project opening or synchronization are captured before escaping. In the catch,
obtain the application logger through ILoggerFactory, persist the exception
details to the run log, and rethrow the original exception; preserve the
existing async scope and disposal behavior.

🪄 Autofix (Beta)

Fix all unresolved CodeRabbit comments on this PR:

• Push a commit to this branch (recommended)
• Create a new PR with the fixes

---

ℹ️ Review info

⚙️ Run configuration

Configuration used: Repository UI

Review profile: CHILL

Plan: Pro Plus

Run ID: 418b2039-7009-4194-9b2f-001e4ebb16aa

📥 Commits

Reviewing files that changed from the base of the PR and between a5c216f and fb2e1a9.

📒 Files selected for processing (5)

• .gitignore
• backend/FwLite/LcmDebugger/LcmDebugger.csproj
• backend/FwLite/LcmDebugger/Program.cs
• backend/FwLite/LcmDebugger/RunOutput.cs
• backend/FwLite/LcmDebugger/Utils.cs

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Build	Status	Details	Updated (UTC)
default (Inspect)	✅ No changes detected	-	Jul 30, 2026, 3:46 PM
e2e (Inspect)	✅ No changes detected	-	Jul 30, 2026, 3:53 PM