Add MIT license

fix: handle mysql2 >=3.23 returning JSON columns pre-parsed (#36)

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https://claude.ai/code/session_01HamVMDrA8RqhyxmUHgiqRp

LICENSE

@@ -0,0 +1,21 @@
+MIT License
+
+Copyright (c) 2025-2026 Jared Vititoe
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.

server.js

@@ -1194,7 +1194,11 @@ app.get('/api/workflows/:id', authenticateSSO, async (req, res) => {
     if (rows.length === 0) return res.status(404).json({ error: 'Not found' });
     const wf = rows[0];
     let definition = {};
-    try { definition = JSON.parse(wf.definition || '{}'); } catch { /* corrupt definition — return empty */ }
+    try {
+      definition = typeof wf.definition === 'string'
+        ? JSON.parse(wf.definition || '{}')
+        : (wf.definition || {});
+    } catch { /* corrupt definition — return empty */ }
     res.json({ ...wf, definition });
   } catch (error) {
     console.error('[API] GET /api/workflows/:id error:', error);
@@ -1659,7 +1663,11 @@ app.get('/api/internal/executions/:id', authenticateGandalf, async (req, res) =>
     }
     const execution = rows[0];
     let logs = [];
-    try { logs = JSON.parse(execution.logs || '[]'); } catch { logs = []; }
+    try {
+      logs = typeof execution.logs === 'string'
+        ? JSON.parse(execution.logs || '[]')
+        : (execution.logs || []);
+    } catch { logs = []; }
     res.json({ ...execution, logs });
   } catch (error) {
     console.error('[API] GET /api/internal/executions/:id error:', error);