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/components/ScheduleGenerator.tsx

@@ -0,0 +1,185 @@
+"use client"
+
+import { useState } from "react"
+
+interface ScheduleGeneratorProps {
+  tournamentId: number
+  teamCount: number
+  existingRounds?: number
+}
+
+export function ScheduleGenerator({ tournamentId, teamCount, existingRounds }: ScheduleGeneratorProps) {
+  const [isGenerating, setIsGenerating] = useState(false)
+  const [error, setError] = useState("")
+  const [result, setResult] = useState<{
+    roundsCreated: number
+    matchupsCreated: number
+  } | null>(null)
+  const [showOverwriteConfirm, setShowOverwriteConfirm] = useState(false)
+
+  const handleGenerate = async () => {
+    setError("")
+    setResult(null)
+    setIsGenerating(true)
+    setShowOverwriteConfirm(false)
+
+    try {
+      const response = await fetch(`/api/tournaments/${tournamentId}/schedule`, {
+        method: "POST",
+      })
+
+      // Check response status first before parsing JSON
+      if (!response.ok) {
+        try {
+          const data = await response.json()
+          setError(data.error || "Failed to generate schedule")
+        } catch {
+          setError(`Failed to generate schedule: ${response.status} ${response.statusText}`)
+        }
+        setIsGenerating(false)
+        return
+      }
+
+      const data = await response.json()
+
+      setResult({
+        roundsCreated: data.roundsCreated,
+        matchupsCreated: data.matchupsCreated,
+      })
+      setIsGenerating(false)
+
+      // Reload to show the schedule
+      setTimeout(() => {
+        window.location.reload()
+      }, 1500)
+    } catch {
+      setError("An error occurred. Please try again.")
+      setIsGenerating(false)
+    }
+  }
+
+  const handleGenerateClick = () => {
+    if (existingRounds && existingRounds > 0) {
+      setShowOverwriteConfirm(true)
+    } else {
+      handleGenerate()
+    }
+  }
+
+  const handleDelete = async () => {
+    setError("")
+    setIsGenerating(true)
+
+    try {
+      const response = await fetch(`/api/tournaments/${tournamentId}/schedule`, {
+        method: "DELETE",
+      })
+
+      if (!response.ok) {
+        try {
+          const data = await response.json()
+          setError(data.error || "Failed to delete schedule")
+        } catch {
+          setError(`Failed to delete schedule: ${response.status} ${response.statusText}`)
+        }
+        setIsGenerating(false)
+        return
+      }
+
+      window.location.reload()
+    } catch {
+      setError("An error occurred. Please try again.")
+      setIsGenerating(false)
+    }
+  }
+
+  const expectedRounds = teamCount % 2 === 0 ? teamCount - 1 : teamCount
+  const expectedMatchups = (teamCount * (teamCount - 1)) / 2
+
+  return (
+    <div className="space-y-4">
+      {error && (
+        <div className="rounded-md bg-red-50 p-4">
+          <div className="text-sm text-red-700">{error}</div>
+        </div>
+      )}
+
+      {result && (
+        <div className="rounded-md bg-green-50 p-4">
+          <div className="text-sm text-green-700">
+            Generated {result.roundsCreated} rounds with {result.matchupsCreated} matchups!
+          </div>
+        </div>
+      )}
+
+      <div className="bg-gray-50 rounded-lg p-4">
+        <p className="text-sm text-gray-600 mb-2">
+          Generate a round-robin schedule for <strong>{teamCount} teams</strong>.
+        </p>
+        <p className="text-sm text-gray-500">
+          This will create {expectedRounds} rounds with {expectedMatchups} total matchups.
+          Each team plays every other team exactly once.
+        </p>
+      </div>
+
+      {/* Overwrite Confirmation */}
+      {showOverwriteConfirm && (
+        <div className="rounded-md bg-yellow-50 p-4 mb-4">
+          <div className="flex items-center">
+            <div className="flex-shrink-0">
+              <svg className="h-5 w-5 text-yellow-400" viewBox="0 0 20 20" fill="currentColor">
+                <path fillRule="evenodd" d="M8.257 3.099c.765-1.36 2.722-1.36 3.486 0l5.58 9.92c.75 1.334-.213 2.98-1.742 2.98H4.42c-1.53 0-2.493-1.646-1.743-2.98l5.58-9.92zM11 13a1 1 0 11-2 0 1 1 0 012 0zm-1-8a1 1 0 00-1 1v3a1 1 0 002 0V6a1 1 0 00-1-1z" clipRule="evenodd" />
+              </svg>
+            </div>
+            <div className="ml-3 flex-1">
+              <h3 className="text-sm font-medium text-yellow-800">
+                Overwrite existing schedule?
+              </h3>
+              <div className="mt-2 text-sm text-yellow-700">
+                <p>A schedule with {existingRounds} round(s) already exists. This will delete the existing schedule and create a new one.</p>
+              </div>
+              <div className="mt-4 flex space-x-3">
+                <button
+                  type="button"
+                  onClick={handleGenerate}
+                  disabled={isGenerating}
+                  className="px-3 py-1.5 bg-yellow-600 text-white text-sm rounded-md hover:bg-yellow-700 disabled:opacity-50"
+                >
+                  {isGenerating ? "Overwriting..." : "Yes, Overwrite"}
+                </button>
+                <button
+                  type="button"
+                  onClick={() => setShowOverwriteConfirm(false)}
+                  disabled={isGenerating}
+                  className="px-3 py-1.5 bg-gray-300 text-gray-700 text-sm rounded-md hover:bg-gray-400 disabled:opacity-50"
+                >
+                  Cancel
+                </button>
+              </div>
+            </div>
+          </div>
+        </div>
+      )}
+
+      <div className="flex space-x-3">
+        <button
+          type="button"
+          onClick={handleGenerateClick}
+          disabled={isGenerating || teamCount < 2}
+          className="px-4 py-2 border border-transparent rounded-md shadow-sm text-sm font-medium text-white bg-green-600 hover:bg-green-700 disabled:opacity-50"
+        >
+          {isGenerating ? "Generating..." : (existingRounds && existingRounds > 0 ? "Regenerate Schedule" : "Generate Schedule")}
+        </button>
+
+        <button
+          type="button"
+          onClick={handleDelete}
+          disabled={isGenerating}
+          className="px-4 py-2 border border-red-300 rounded-md shadow-sm text-sm font-medium text-red-700 bg-white hover:bg-red-50 disabled:opacity-50"
+        >
+          Delete Schedule
+        </button>
+      </div>
+    </div>
+  )
+}