chore: replace stale pnpm references with npm equivalents

The repository migrated from pnpm workspaces to npm in 4071cbc but
several files were not updated at that time:

- .github/pull_request_template.md: checklist items still referenced
  `pnpm -r run lint/typecheck/test`; replaced with the npm --prefix
  equivalents used by CI.
- .gitignore: removed pnpm-debug.log* (pnpm is no longer installed).
- apps/web/.gitignore: same pnpm-debug.log* removal.
- apps/mobile/jest.config.js: removed the \.pnpm/ virtual-store branch
  from the transformIgnorePatterns regex (dead code under npm).

Author: Ridanshi

.github/pull_request_template.md

@@ -43,10 +43,10 @@ Closes #
 
 ## Checklist
 
-- [ ] My code follows the project's coding style (`pnpm -r run lint` passes).
-- [ ] TypeScript compiles without errors (`pnpm -r run typecheck`).
+- [ ] My code follows the project's coding style (`npm --prefix apps/backend run lint` passes).
+- [ ] TypeScript compiles without errors (`npm --prefix apps/backend run typecheck`).
 - [ ] I have added or updated tests for the changes I made.
-- [ ] All tests pass locally (`pnpm -r run test`).
+- [ ] All tests pass locally (`npm --prefix apps/backend run test`).
 - [ ] I have updated documentation where necessary.
 - [ ] No new `console.log` or debug statements left in the code.
 - [ ] Breaking changes are documented in this PR description.

.gitignore

@@ -45,6 +45,5 @@ coverage/
 *.log
 npm-debug.log*
 yarn-debug.log*
-pnpm-debug.log*
 .cache/
 tmp/

apps/mobile/jest.config.js

@@ -2,6 +2,6 @@ module.exports = {
   preset: 'react-native',
   setupFiles: ['<rootDir>/jest.setup.js'],
   transformIgnorePatterns: [
-    'node_modules/(?!((react-native|@react-native|@react-navigation|@gorhom)/|\\.pnpm/(react-native|@react-native|@react-navigation|@gorhom)[^/]*))',
+    'node_modules/(?!((react-native|@react-native|@react-navigation|@gorhom)/))',
   ],
 };

apps/web/.gitignore

@@ -4,7 +4,6 @@ logs
 npm-debug.log*
 yarn-debug.log*
 yarn-error.log*
-pnpm-debug.log*
 lerna-debug.log*
 
 node_modules