chore: add lint:fix script for ESLint auto-fixes

[var-raphael]

Closes #1466

Added a lint:fix script that mirrors the existing lint script setup — root script fans out via yarn workspaces foreach, and added the actual eslint . --fix command in packages/web (currently the only workspace with a lint script).

Tested by running yarn lint:fix — it auto-fixed what ESLint could fix and correctly left 4 warnings that need manual review (unused vars, missing hook deps), same as expected behavior with --fix.

Also added a CHANGELOG entry under Unreleased.

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Note

Low Risk
Tooling-only script additions with no runtime, auth, or data-path changes.

Overview
Adds yarn lint:fix at the repo root, using the same yarn workspaces foreach pattern as lint so workspaces can run an auto-fix pass in one command.

In @sourcebot/web, adds lint:fix as eslint . --fix with the same SKIP_ENV_VALIDATION wrapper as the existing lint script. That package is currently the only workspace defining lint, so this is where fix behavior lands today.

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Summary by CodeRabbit

• Chores
  • Added commands to automatically fix linting issues across the project.
  • Added web application support for automatically correcting ESLint errors and formatting issues.

[coderabbitai]

Caution

Review failed

The pull request is closed.

ℹ️ Recent review info

⚙️ Run configuration

Configuration used: Organization UI

Review profile: CHILL

Plan: Pro Plus

Run ID: 6114991f-6bd2-480b-8164-0552df4baba3

📥 Commits

Reviewing files that changed from the base of the PR and between 1c6e175 and 1f6a33f.

📒 Files selected for processing (1)

• package.json

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Walkthrough

The change adds a root lint:fix command and a web workspace lint:fix command. The root command runs workspace scripts in topological order. The web command runs ESLint with auto-fix enabled and environment validation skipped.

Changes

Lint auto-fix scripts

Layer / File(s)	Summary
Workspace lint auto-fix flow package.json, packages/web/package.json	The root script delegates lint:fix across Yarn workspaces. The web script runs eslint . --fix with SKIP_ENV_VALIDATION=1.

Estimated code review effort: 1 (Trivial) | ~2 minutes

🚥 Pre-merge checks | ✅ 3 | ❌ 2

❌ Failed checks (2 warnings)

Check name	Status	Explanation	Resolution
Linked Issues check	⚠️ Warning	The PR adds the root shortcut and web script, but it misses the other four workspace scripts and the required CONTRIBUTING.md update from #1466.	Add lint:fix to backend, db, schemas, and shared; update CONTRIBUTING.md; then verify yarn lint:fix and yarn lint.
Out of Scope Changes check	⚠️ Warning	The CHANGELOG.md entry is unrelated to the requested lint script and CONTRIBUTING.md changes, so it appears to be extra scope.	Remove the changelog edit or move it to a separate release-notes PR unless it's required by repository policy.

✅ Passed checks (3 passed)

Check name	Status	Explanation
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check.
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.
Title check	✅ Passed	The title clearly and concisely describes the addition of the lint:fix script for ESLint auto-fixes.

✨ Finishing Touches 💡 1

🛠️ Fix failing CI checks 💡

• Create stacked PR
• Commit on current branch

🧪 Generate unit tests (beta)

• Create PR with unit tests

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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 `@CHANGELOG.md`:
- Around line 10-11: Update the changelog entry for the lint:fix script to
replace the placeholder [`#XXXX`] reference and URL with the actual pull request
number and corresponding GitHub link once the PR is created.

🪄 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 Plus

Run ID: 60313d5c-9208-4cbc-bd69-580d74077215

📥 Commits

Reviewing files that changed from the base of the PR and between 9491a13 and 52e9795.

📒 Files selected for processing (3)

• CHANGELOG.md
• package.json
• packages/web/package.json