Dockerfile: clone patched emdash from gitea instead of using npm

Patches visual editor image upload fix from:
https://git.moreminimore.com/kunthawat/emdash-patch-imageupload.git

.omc/state/checkpoints/checkpoint-2026-05-01T12-57-42-460Z.json

@@ -0,0 +1,16 @@
+{
+  "created_at": "2026-05-01T12:57:42.459Z",
+  "trigger": "auto",
+  "active_modes": {},
+  "todo_summary": {
+    "pending": 0,
+    "in_progress": 0,
+    "completed": 0
+  },
+  "wisdom_exported": false,
+  "background_jobs": {
+    "active": [],
+    "recent": [],
+    "stats": null
+  }
+}

.omc/state/checkpoints/checkpoint-2026-05-02T02-49-03-241Z.json

@@ -0,0 +1,16 @@
+{
+  "created_at": "2026-05-02T02:49:03.240Z",
+  "trigger": "auto",
+  "active_modes": {},
+  "todo_summary": {
+    "pending": 0,
+    "in_progress": 0,
+    "completed": 0
+  },
+  "wisdom_exported": false,
+  "background_jobs": {
+    "active": [],
+    "recent": [],
+    "stats": null
+  }
+}

.omc/state/checkpoints/checkpoint-2026-05-02T03-12-36-942Z.json

@@ -0,0 +1,16 @@
+{
+  "created_at": "2026-05-02T03:12:36.942Z",
+  "trigger": "auto",
+  "active_modes": {},
+  "todo_summary": {
+    "pending": 0,
+    "in_progress": 0,
+    "completed": 0
+  },
+  "wisdom_exported": false,
+  "background_jobs": {
+    "active": [],
+    "recent": [],
+    "stats": null
+  }
+}

.omc/state/checkpoints/checkpoint-2026-05-02T03-18-55-714Z.json

@@ -0,0 +1,16 @@
+{
+  "created_at": "2026-05-02T03:18:55.713Z",
+  "trigger": "auto",
+  "active_modes": {},
+  "todo_summary": {
+    "pending": 0,
+    "in_progress": 0,
+    "completed": 0
+  },
+  "wisdom_exported": false,
+  "background_jobs": {
+    "active": [],
+    "recent": [],
+    "stats": null
+  }
+}

.omc/state/checkpoints/checkpoint-2026-05-02T03-24-24-820Z.json

@@ -0,0 +1,16 @@
+{
+  "created_at": "2026-05-02T03:24:24.819Z",
+  "trigger": "auto",
+  "active_modes": {},
+  "todo_summary": {
+    "pending": 0,
+    "in_progress": 0,
+    "completed": 0
+  },
+  "wisdom_exported": false,
+  "background_jobs": {
+    "active": [],
+    "recent": [],
+    "stats": null
+  }
+}

.omc/state/checkpoints/checkpoint-2026-05-02T03-47-02-118Z.json

@@ -0,0 +1,16 @@
+{
+  "created_at": "2026-05-02T03:47:02.117Z",
+  "trigger": "auto",
+  "active_modes": {},
+  "todo_summary": {
+    "pending": 0,
+    "in_progress": 0,
+    "completed": 0
+  },
+  "wisdom_exported": false,
+  "background_jobs": {
+    "active": [],
+    "recent": [],
+    "stats": null
+  }
+}

.omc/state/checkpoints/checkpoint-2026-05-02T09-30-22-645Z.json

@@ -0,0 +1,16 @@
+{
+  "created_at": "2026-05-02T09:30:22.643Z",
+  "trigger": "auto",
+  "active_modes": {},
+  "todo_summary": {
+    "pending": 0,
+    "in_progress": 0,
+    "completed": 0
+  },
+  "wisdom_exported": false,
+  "background_jobs": {
+    "active": [],
+    "recent": [],
+    "stats": null
+  }
+}