chore(worker): Reduce logger verbosity

[brendan-kellam]

Summary by CodeRabbit

• Changed
  • Reduced backend operational log verbosity by downgrading many non-critical messages to debug level across API startup, config updates, job scheduling, health checks, permission syncs, and repository indexing workflows.
  • Debug-level logs remain available for detailed troubleshooting while normal operation logs focus on significant events, reducing noise in standard logs.

[coderabbitai]

No actionable comments were generated in the recent review. 🎉

ℹ️ Recent review info

⚙️ Run configuration

Configuration used: Organization UI

Review profile: CHILL

Plan: Pro

Run ID: 334e524d-5296-4a6c-9888-e0feceaa6d79

📥 Commits

Reviewing files that changed from the base of the PR and between 0a6a7c7 and 161d623.

📒 Files selected for processing (6)

• packages/backend/src/azuredevops.ts
• packages/backend/src/ee/accountPermissionSyncer.ts
• packages/backend/src/ee/repoPermissionSyncer.ts
• packages/backend/src/ee/syncSearchContexts.ts
• packages/backend/src/repoCompileUtils.ts
• packages/backend/src/zoekt.ts

✅ Files skipped from review due to trivial changes (5)

• packages/backend/src/ee/syncSearchContexts.ts
• packages/backend/src/ee/accountPermissionSyncer.ts
• packages/backend/src/azuredevops.ts
• packages/backend/src/ee/repoPermissionSyncer.ts
• packages/backend/src/repoCompileUtils.ts

🚧 Files skipped from review as they are similar to previous changes (1)

• packages/backend/src/zoekt.ts

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Walkthrough

Reduce logging verbosity by changing multiple backend and web informational logger.info(...) calls to logger.debug(...) across initialization, config/connection sync, job scheduling/execution, indexing, pruning, and health-check handlers; also add an Unreleased changelog entry documenting this change.

Changes

Log Level Downgrades

Layer / File(s)	Summary
Documentation CHANGELOG.md	Added [Unreleased] → ### Changed entry documenting the reduction of worker log verbosity (info → debug).
Initialization & Connectivity packages/backend/src/api.ts, packages/backend/src/index.ts	API listen and Redis post-connection success logs changed from info to debug.
Configuration Management packages/backend/src/configManager.ts	Config file update, connection sync job creation, and declarative connection deletion logs changed from info to debug.
Connection Scheduling & Execution packages/backend/src/connectionManager.ts	Connection sync job scheduling, job start/run, repo upsert/delete summary logs changed from info to debug.
Permission & Search Sync Jobs packages/backend/src/ee/accountPermissionSyncer.ts, packages/backend/src/ee/repoPermissionSyncer.ts, packages/backend/src/ee/syncSearchContexts.ts	Permission sync start/completion and search-context deletion logs downgraded from info to debug.
Audit Log Maintenance packages/backend/src/ee/auditLogPruner.ts	Pruner scheduler startup, pruning cutoff announcement, and pruning outcome logs changed from info to debug.
Repository Indexing Workflows packages/backend/src/repoIndexManager.ts, packages/backend/src/repoCompileUtils.ts	Indexing job start/completion, fetch/clone start and duration logs, indexing/cleanup logs, repo/shard deletions, and glob/repo-found summaries changed from info to debug; failure logs augmented with “Reason: …”.
Zoekt Subprocess & Cleanup packages/backend/src/zoekt.ts	zoekt-git-index child-process stdout/stderr line logs and temp-shard cleanup logs changed from info to debug; cleanup warn-on-error behavior unchanged.
Azure DevOps Repo Fetching packages/backend/src/azuredevops.ts	Repository fetch start and per-repo found logs downgraded from info to debug.
Health Check Endpoint packages/web/src/app/api/(server)/health/route.ts	Health-check request log changed from info to debug.

Estimated code review effort

🎯 2 (Simple) | ⏱️ ~12 minutes

Possibly related PRs

• sourcebot-dev/sourcebot#973: Modifies repoIndexManager logging/cleanup behavior—overlaps with orphaned repo/index shard logging changes.
• sourcebot-dev/sourcebot#860: Large worker/queue migration affecting connectionManager and repoIndexManager; potentially interacts with logging and job lifecycle code.
• sourcebot-dev/sourcebot#600: Refactors permission syncer logic; touches the same account/permission sync files where logs were downgraded.

Suggested reviewers

• msukkari

🚥 Pre-merge checks | ✅ 4 | ❌ 1

❌ Failed checks (1 warning)

Check name	Status	Explanation	Resolution
Docstring Coverage	⚠️ Warning	Docstring coverage is 0.00% which is insufficient. The required threshold is 80.00%.	Write docstrings for the functions missing them to satisfy the coverage threshold.

✅ Passed checks (4 passed)

Check name	Status	Explanation
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.
Title check	✅ Passed	The title accurately and concisely summarizes the main objective of the pull request—reducing logger verbosity by downgrading info-level logs to debug-level across multiple backend and worker components.
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.

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✨ 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 bkellam/improved-logging

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[coderabbitai]

Actionable comments posted: 1

🤖 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 `@packages/backend/src/zoekt.ts`:
- Around line 43-47: The stderr output from the exec callback is being logged at
debug via logger.debug, which hides non-fatal warnings from zoekt-git-index;
change the stderr handling in the exec callback (the block that currently calls
stderr.split(...).forEach(line => logger.debug(line))) to log each non-empty
stderr line at warn (or info) level instead, include a short contextual prefix
like "zoekt-git-index:" or "zoekt index warning" in the message so it's clear in
logs, and otherwise keep the same splitting/filtering logic.

🪄 Autofix (Beta)

Fix all unresolved CodeRabbit comments on this PR:

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

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ℹ️ Review info

⚙️ Run configuration

Configuration used: Organization UI

Review profile: CHILL

Plan: Pro

Run ID: 1ececb4a-c189-41e4-af07-5c8b4f25557e

📥 Commits

Reviewing files that changed from the base of the PR and between fdb05c0 and 0a6a7c7.

📒 Files selected for processing (9)

• CHANGELOG.md
• packages/backend/src/api.ts
• packages/backend/src/configManager.ts
• packages/backend/src/connectionManager.ts
• packages/backend/src/ee/auditLogPruner.ts
• packages/backend/src/index.ts
• packages/backend/src/repoIndexManager.ts
• packages/backend/src/zoekt.ts
• packages/web/src/app/api/(server)/health/route.ts