feat: Implement tournament schedule tab and fix E2E tests (#27)

## Summary

This PR implements the tournament schedule tab functionality and fixes all remaining E2E test failures.

### Changes Included

1. **Tournament Schedule Feature**
   - Added tournament schedule page at `/admin/tournaments/[id]/schedule`
   - Implemented "Generate Schedule" button functionality
   - Added schedule generation logic for round-robin tournaments

2. **E2E Test Fixes**
   - Fixed database connection issues in production builds
   - Improved test reliability with better error handling and debugging
   - Updated test infrastructure to use environment variables instead of hardcoded values

3. **CI/CD Updates**
   - Added E2E test job to PR workflow
   - Configured tests to run against development database
   - Moved database password to Gitea secrets

4. **Code Quality**
   - Removed hardcoded passwords from codebase
   - Improved Prisma client configuration
   - Enhanced authentication and navigation components

### Test Results
All 16 E2E test scenarios are now passing:
- Authentication tests: ✅
- Registration tests: ✅
- Tournament schedule tests: ✅
- Player schedule tests: ✅
- Admin navigation tests: ✅

### Database Configuration
- Tests run against `euchre_camp_dev` database
- Production builds use environment variables for database configuration
- Database password stored in Gitea secrets as `DB_PASSWORD`

### CI Pipeline
The PR workflow now includes:
1. Unit tests
2. E2E tests (using production build)
3. Version bump analysis

E2E tests must pass before PR can be merged.

Reviewed-on: #27
Co-authored-by: David Gwilliam <dhgwilliam@gmail.com>
Co-committed-by: David Gwilliam <dhgwilliam@gmail.com>

src/app/admin/players/page.tsx

@@ -64,6 +64,16 @@ export default function AdminPlayersPage() {
         body: JSON.stringify({ name: newName.trim() }),
       })
 
+      if (!response.ok) {
+        try {
+          const errorData = await response.json()
+          alert(`Error: ${errorData.error || 'Failed to update player'}`)
+        } catch {
+          alert(`Error: ${response.status} ${response.statusText}`)
+        }
+        return
+      }
+
       const data = await response.json()
 
       if (data.success) {
@@ -105,6 +115,16 @@ export default function AdminPlayersPage() {
         }),
       })
 
+      if (!response.ok) {
+        try {
+          const errorData = await response.json()
+          alert(`Error: ${errorData.error || 'Failed to merge players'}`)
+        } catch {
+          alert(`Error: ${response.status} ${response.statusText}`)
+        }
+        return
+      }
+
       const data = await response.json()
 
       if (data.success) {
@@ -117,7 +137,7 @@ export default function AdminPlayersPage() {
         alert(`Error: ${data.error}`)
       }
     } catch (err: unknown) {
-      alert(`Error: ${err instanceof Error ? err.message : 'Unknown error occurred'}`)
+      alert(`Error: ${err instanceof Error ? err.message : "Unknown error occurred"}`)
     } finally {
       setIsMerging(false)
     }
@@ -134,6 +154,16 @@ export default function AdminPlayersPage() {
         method: "DELETE",
       })
 
+      if (!response.ok) {
+        try {
+          const errorData = await response.json()
+          alert(`Error: ${errorData.error || 'Failed to delete player'}`)
+        } catch {
+          alert(`Error: ${response.status} ${response.statusText}`)
+        }
+        return
+      }
+
       const data = await response.json()
 
       if (data.success) {
@@ -142,7 +172,7 @@ export default function AdminPlayersPage() {
         alert(`Error: ${data.error}`)
       }
     } catch (err: unknown) {
-      alert(`Error: ${err instanceof Error ? err.message : "Unknown error occurred"}`)
+      alert(`Error: ${err instanceof Error ? err.message : 'Unknown error occurred'}`)
     } finally {
       setDeletingId(null)
     }
@@ -201,6 +231,32 @@ export default function AdminPlayersPage() {
             </div>
           )}
 
+          {/* Search and Filter Controls */}
+          <div className="bg-white shadow rounded-lg p-4 mb-4">
+            <div className="flex items-center space-x-4">
+              <div className="flex-1">
+                <input
+                  type="text"
+                  name="search"
+                  placeholder="Search players by name..."
+                  className="w-full px-3 py-2 border border-gray-300 rounded-md shadow-sm focus:outline-none focus:ring-green-500 focus:border-green-500"
+                  onChange={async (e) => {
+                    const search = e.target.value
+                    try {
+                      const response = await fetch(`/api/players?search=${encodeURIComponent(search)}`)
+                      if (response.ok) {
+                        const data = await response.json()
+                        setPlayers(data)
+                      }
+                    } catch (err) {
+                      console.error('Search failed:', err)
+                    }
+                  }}
+                />
+              </div>
+            </div>
+          </div>
+
           {/* Player Table */}
           <div className="bg-white shadow rounded-lg overflow-hidden">
             <table className="min-w-full divide-y divide-gray-200">