feat: Add string extraction and generation tools for i18n

[codenameakshay]

Summary

Introduces automated tooling for managing UI strings across Android and iOS platforms. This enables a centralized strings management workflow where strings are extracted from Dart code, stored in Android's strings.xml, and then generated into platform-specific formats.

Key Changes

• tool/extract_strings.dart: New tool that scans Dart source files for hardcoded UI strings (Text widgets, labels, hints, tooltips, etc.) using regex patterns. Extracts unique strings and merges them into android/app/src/main/res/values/strings.xml while avoiding duplicates and filtering out non-translatable content (URLs, file paths, regex patterns, analytics keys, etc.).

• tool/generate_strings.dart: New tool that reads the centralized strings.xml and generates:

  • lib/core/l10n/app_strings.g.dart: Dart class with static string constants (snake_case keys converted to camelCase)
  • ios/Runner/Base.lproj/Localizable.strings: iOS-format strings file for localization

• lib/core/l10n/app_strings.g.dart: Generated Dart constants file containing 8 UI strings (marked as generated code, not to be manually edited)

• ios/Runner/Base.lproj/Localizable.strings: Generated iOS localization file with the same strings in iOS format

• Makefile: Added new targets:

  • strings-extract: Run extraction tool
  • strings-gen: Run generation tool and format output
  • strings: Run both extraction and generation
  • strings-check: Verify generated files are up-to-date (for CI)
  • Updated ci target to include strings-check

Implementation Details

• Uses LinkedHashMap to preserve insertion order in XML files
• Extraction patterns support both single and double-quoted strings across multiple UI parameter types
• Intelligent key generation converts values to snake_case with collision handling
• Exclusion filters prevent extraction of non-user-facing strings (URLs, asset paths, programmatic keys, regex patterns)
• Proper XML escaping/unescaping for special characters
• Generated files include headers indicating they are auto-generated

https://claude.ai/code/session_011ytNUzWd4ENWrRHkPeWKFc

[coderabbitai]

Important

Review skipped

Auto reviews are disabled on base/target branches other than the default branch.

Please check the settings in the CodeRabbit UI or the .coderabbit.yaml file in this repository. To trigger a single review, invoke the @coderabbitai review command.

⚙️ Run configuration

Configuration used: defaults

Review profile: CHILL

Plan: Pro

Run ID: f4640f83-20ac-4340-ab8c-394eb46544e6

You can disable this status message by setting the reviews.review_status to false in the CodeRabbit configuration file.

Use the checkbox below for a quick retry:

• 🔍 Trigger review

✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Post copyable unit tests in a comment
• Commit unit tests in branch claude/strings-repository-localization-pU85m

📝 Coding Plan

• Generate coding plan for human review comments

---

_{Comment @coderabbitai help to get the list of available commands and usage tips.}

[github-actions]

Android App Size Report

Status: PASS

Metric	Base	Head	Delta
app-profile.apk	85,063,025 B (81.12 MiB)	85,006,997 B (81.07 MiB)	-56,028 B (-0.05 MiB) (-0.07%)

Thresholds: max delta 1,572,864 B (1.50 MiB) OR 5.00%.

Top artifact bucket deltas (uncompressed bytes):

• bundle_metadata: +0 B (0.00 MiB)
• dex: +0 B (0.00 MiB)
• meta_inf: +0 B (0.00 MiB)
• native_libs: +0 B (0.00 MiB)
• other: +0 B (0.00 MiB)