docs: add naming conventions, PR template, and remove concrete values (#230)

* docs: add naming conventions, PR template, and remove concrete values
Add function naming conventions section to ARCHITECTURE.md:
- Naming rules table (is*, has*, validate*, *OrThrow, assert*, etc.)
- Prohibited patterns list
- Terminology definitions (valid/secure/safe)
Add ESLint exclusion patterns section:
- Document intentional lint rule bypasses
- Prevent accidental removal of necessary exclusions
Remove concrete values to prevent documentation drift:
- Remove line counts, file counts, validator counts
- Remove line number references in code examples
- Replace specific numbers with generic terms (e.g., "Multi-Layer")
- Reference source files as single source of truth
Create .github/PULL_REQUEST_TEMPLATE.md:
- General checklist (tests, linter, coverage)
- Naming conventions checklist
- Security checklist

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* chore: bump version to 0.14.4 and update CHANGELOG
- Add CHANGELOG entry for 0.14.4
- Bump package.json version from 0.14.3 to 0.14.4

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* style: fix markdown table column alignment per Restyled suggestions

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---------

Co-authored-by: Claude Opus 4.5 <noreply@anthropic.com>

Author: nullvariant

.github/PULL_REQUEST_TEMPLATE.md

@@ -0,0 +1,32 @@
+## Summary
+
+<!-- Brief description of what this PR does -->
+
+## Changes
+
+<!-- List of changes -->
+
+-
+
+## Checklist
+
+### General
+
+- [ ] Tests pass (`npm test`)
+- [ ] Linter passes (`npm run lint`)
+- [ ] Coverage not decreased (`npm run test:coverage`)
+
+### Naming Conventions (if adding/renaming functions)
+
+- [ ] `is*` functions return `boolean` only
+- [ ] `has*` functions return `boolean` only
+- [ ] `validate*` functions return result object (not void)
+- [ ] Functions that throw use `*OrThrow` or `assert*` prefix
+- [ ] No `check*` prefix used for pure predicates
+- [ ] See [ARCHITECTURE.md](extensions/git-id-switcher/docs/ARCHITECTURE.md#function-naming-conventions)
+
+### Security (if touching validation/security code)
+
+- [ ] No new magic numbers (use constants from `src/core/constants.ts`)
+- [ ] No new regex literals (use patterns from `src/validators/common.ts`)
+- [ ] Security-critical changes have `// SECURITY:` comments

extensions/git-id-switcher/CHANGELOG.md

@@ -7,6 +7,23 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ## [Unreleased]
 
+## [0.14.4] - 2026-01-25
+
+### Changed
+
+- **ARCHITECTURE.md Improvements**: Enhanced documentation maintainability
+  - Added "Function Naming Conventions" section with naming rules table
+  - Added "ESLint Exclusion Patterns" section documenting intentional lint bypasses
+  - Removed concrete values (line counts, file counts, validator counts) to prevent documentation drift
+  - Replaced specific numbers with generic terms (e.g., "Multi-Layer" instead of "2 Layers")
+
+### Added
+
+- **PR Template**: Created `.github/PULL_REQUEST_TEMPLATE.md`
+  - General checklist (tests, linter, coverage)
+  - Naming conventions checklist for function additions/renames
+  - Security checklist for validation/security code changes
+
 ## [0.14.3] - 2026-01-25
 
 ### Security