Massive Next.js (14->16) and React (18->19) upgrade

.github/actions/setup/action.yml

@@ -30,4 +30,4 @@ runs:
     - name: Post-install
       if: steps.cache-node-modules.outputs.cache-hit == 'true'
       run: yarn postinstall
-      shell: bash
+      shell: bash

.github/copilot-instructions.md

@@ -522,7 +522,6 @@ How we apply it here
 This project uses three complementary test types. Use the right level for the job:
 
 - Unit tests
-
   - Purpose: Verify a single function/module in isolation; fast, deterministic.
   - Where: Each package under `tests/unit` (e.g., `backend/api/tests/unit`, `web/tests/unit`, `common/tests/unit`,
     etc.).
@@ -531,7 +530,6 @@ This project uses three complementary test types. Use the right level for the jo
   - When to use: Pure logic, utilities, hooks, reducers, small components with mocked dependencies.
 
 - Integration tests
-
   - Purpose: Verify multiple units working together (e.g., function + DB/client, component + context/provider) without
     spinning up the full app.
   - Where: Each package under `tests/integration` (e.g., `backend/shared/tests/integration`, `web/tests/integration`).

.github/workflows/cd-android-live-update.yml

@@ -1,7 +1,7 @@
 name: CD Android Live Update
 on:
   push:
-    branches: [ main, master ]
+    branches: [main, master]
     paths:
       - 'android/capawesome.json'
       - '.github/workflows/cd-android-live-update.yml'

.github/workflows/cd-api.yml

@@ -1,7 +1,7 @@
 name: API Release
 on:
   push:
-    branches: [ main, master ]
+    branches: [main, master]
     paths:
       - 'backend/api/package.json'
       - '.github/workflows/cd-api.yml'

.github/workflows/ci-e2e.yml

@@ -2,9 +2,9 @@ name: E2E Tests
 
 on:
   push:
-    branches: [ main ]
+    branches: [main]
   pull_request:
-    branches: [ main ]
+    branches: [main]
 
 jobs:
   e2e:

.github/workflows/ci.yml

@@ -2,9 +2,9 @@ name: CI
 
 on:
   push:
-    branches: [ main ]
+    branches: [main]
   pull_request:
-    branches: [ main ]
+    branches: [main]
 
 jobs:
   lint: