v2.4 — Character Editor + Image-to-Image Portrait Consistency

Features:
- /edit/{name} route: Character nachträglich bearbeiten
- /api/character/update/{name}: API zum Aktualisieren
- create.html dient als Editor und Creator (mode=edit/create)
- Index-Seite: ✏️ Button pro Character
- Portrait-Vorschau im Editor
- Image-to-Image: Folge-Portraits nutzen bestehendes Bild als Referenz
  - LoadImage → ImageScale → VAEEncode → KSampler (denoise=0.45)
  - Aussehen bleibt konsistent über mehrere Generierungen
  - Fallback auf Text-to-Image wenn kein Referenzbild existiert
- ComfyUI Image Upload via /upload/image API
- Jinja2 if-Expressions für vorausgefüllte Formularfelder

characters/mara.json

@@ -1,7 +1,7 @@
 {
   "name": "Mara",
   "avatar": "☕",
-  "description": "Barista, 28, Nachtarbeiterin, zynisch aber warmherzig",
+  "description": "Barista, 28, zynisch aber warmherzig — aktualisiert",
   "personality": "Trocken, sarkastisch, aber loyal. Hilfsbereit auf ihre eigene Art. Zeigt Gefühle selten direkt, aber man merkt wenn sie jemanden mag. Morgens (für sie Abends) besonders grantig. Hat einen schwarzen Humor.",
   "background": "Heißt Mara, 28 Jahre. Arbeitet seit 5 Jahren in einem kleinen Café in Neukölln. Hat mal Kunst studiert, nach 3 Semestern abgebrochen. Lebt allein mit einer katze namens 'Kinski'. Spielt Bass in einer Band die nie probt. Trinkt zu viel Kaffee, schläft zu wenig.",
   "behavior": "Flucht in Wortwitze wenn nervös. Klopft immer auf den Tresen. Unterbricht nie, aber fragt nach. Stellt Gegenfragen. Wird persönlich wenn man ehrlich zu ihr ist. *Aktionen in Sternchen*.",

comfyui_integration.py

@@ -158,8 +158,83 @@ def wait_for_image(prompt_id: str, timeout: int = 180) -> str | None:
         time.sleep(3)
     return None
 
+def build_i2i_workflow(prompt: str, negative: str, reference_image_path: str, width: int = 512, height: int = 512, denoise: float = 0.45) -> dict:
+    """Image-to-Image Workflow — nutzt ein Referenzbild für Konsistenz."""
+    return {
+        "3": {
+            "class_type": "KSampler",
+            "inputs": {
+                "seed": int(time.time()) % (2**32),
+                "steps": 25,
+                "cfg": 7.0,
+                "sampler_name": "dpmpp_2m",
+                "scheduler": "karras",
+                "denoise": denoise,
+                "model": ["4", 0],
+                "positive": ["6", 0],
+                "negative": ["7", 0],
+                "latent_image": ["10", 0]
+            }
+        },
+        "4": {
+            "class_type": "CheckpointLoaderSimple",
+            "inputs": {"ckpt_name": "NoobAI-XL-v1.1.safetensors"}
+        },
+        "5": {
+            "class_type": "LoadImage",
+            "inputs": {"image": reference_image_path}
+        },
+        "6": {
+            "class_type": "CLIPTextEncode",
+            "inputs": {
+                "text": prompt,
+                "clip": ["4", 1]
+            }
+        },
+        "7": {
+            "class_type": "CLIPTextEncode",
+            "inputs": {
+                "text": f"lowres, bad anatomy, bad hands, text, error, missing fingers, extra digit, fewer digits, cropped, worst quality, low quality, blurry, deformed, ugly, {negative}",
+                "clip": ["4", 1]
+            }
+        },
+        "8": {
+            "class_type": "VAEDecode",
+            "inputs": {"samples": ["3", 0], "vae": ["4", 2]}
+        },
+        "9": {
+            "class_type": "SaveImage",
+            "inputs": {"filename_prefix": "neonchat_portrait", "images": ["8", 0]}
+        },
+        "10": {
+            "class_type": "VAEEncode",
+            "inputs": {"pixels": ["11", 0], "vae": ["4", 2]}
+        },
+        "11": {
+            "class_type": "ImageScale",
+            "inputs": {
+                "image": ["5", 0],
+                "upscale_method": "bilinear",
+                "width": width,
+                "height": height,
+                "crop": "center"
+            }
+        }
+    }
+
+def upload_image_to_comfy(image_path: str) -> str:
+    """Lädt ein Bild zu ComfyUI hoch und gibt den Dateinamen zurück."""
+    import os
+    filename = os.path.basename(image_path)
+    with open(image_path, "rb") as f:
+        files = {"image": (filename, f, "image/png")}
+        with httpx.Client(timeout=30) as client:
+            resp = client.post(f"{COMFYUI_URL}/upload/image", files=files)
+            data = resp.json()
+            return data.get("name", filename)
+
 def generate_portrait(character_name: str, character: dict, context: str = "") -> str | None:
-    """Generiert ein Profilbild basierend auf dem Character-Aussehen."""
+    """Generiert ein Profilbild. Nutzt Image-to-Image wenn ein Referenzbild existiert."""
     if not is_comfyui_running():
         return None
     
@@ -168,7 +243,21 @@ def generate_portrait(character_name: str, character: dict, context: str = "") -
     prompt = build_prompt_from_appearance(character, context)
     negative = "realistic, 3d, render"
     
-    workflow = build_portrait_workflow(prompt, negative, width=512, height=512)
+    # Check if we have a reference image for consistency
+    safe_name = character_name.lower().replace(" ", "_")
+    ref_image = AVATARS_DIR / f"{safe_name}.png"
+    
+    if ref_image.exists():
+        # Image-to-Image for consistency
+        try:
+            uploaded_name = upload_image_to_comfy(str(ref_image))
+            workflow = build_i2i_workflow(prompt, negative, uploaded_name, 512, 512, denoise=0.45)
+        except Exception as e:
+            print(f"I2I upload failed, falling back to T2I: {e}")
+            workflow = build_portrait_workflow(prompt, negative, 512, 512)
+    else:
+        # First generation — Text-to-Image
+        workflow = build_portrait_workflow(prompt, negative, 512, 512)
     
     try:
         prompt_id = queue_prompt(workflow)
@@ -183,7 +272,6 @@ def generate_portrait(character_name: str, character: dict, context: str = "") -
         if not comfy_output.exists():
             return None
         
-        safe_name = character_name.lower().replace(" ", "_")
         dest = AVATARS_DIR / f"{safe_name}.png"
         shutil.copy2(str(comfy_output), str(dest))
         

main.py

@@ -295,7 +295,17 @@ async def index(request: Request, session_id: str = Cookie(None, alias=SESSION_C
 
 @app.get("/create", response_class=HTMLResponse)
 async def create_page(request: Request):
-    return templates.TemplateResponse(request, "create.html", {})
+    return templates.TemplateResponse(request, "create.html", {"mode": "create", "character": None})
+
+@app.get("/edit/{character_name}", response_class=HTMLResponse)
+async def edit_page(request: Request, character_name: str):
+    char = load_character(character_name)
+    safe_name = character_name.lower().replace(" ", "_")
+    return templates.TemplateResponse(request, "create.html", {
+        "mode": "edit",
+        "character": char,
+        "character_filename": safe_name,
+    })
 
 @app.get("/chat/{character_name}", response_class=HTMLResponse)
 async def chat_page(request: Request, character_name: str, session_id: str = Cookie(None, alias=SESSION_COOKIE_NAME)):
@@ -463,6 +473,34 @@ async def api_create_character(request: Request):
     
     return JSONResponse({"status": "ok", "character": safe_name})
 
+@app.post("/api/character/update/{character_name}")
+async def api_update_character(character_name: str, request: Request):
+    """Aktualisiert einen bestehenden Character."""
+    path = CHARACTERS_DIR / f"{character_name}.json"
+    if not path.exists():
+        raise HTTPException(status_code=404, detail=f"Character {character_name} not found")
+    
+    body = await request.json()
+    
+    # Load existing, update fields
+    with open(path, "r", encoding="utf-8") as f:
+        char = json.load(f)
+    
+    # Update all fields
+    for key in ["name", "avatar", "description", "personality", "background", 
+                "behavior", "tone", "scenario", "nsfw", "greeting", "model", "temperature"]:
+        if key in body:
+            char[key] = body[key]
+    
+    # Update appearance
+    if "appearance" in body:
+        char["appearance"] = body["appearance"]
+    
+    with open(path, "w", encoding="utf-8") as f:
+        json.dump(char, f, indent=2, ensure_ascii=False)
+    
+    return JSONResponse({"status": "ok", "character": character_name})
+
 @app.get("/api/character/{name}")
 async def api_get_character(name: str):
     char = load_character(name)

templates/create.html

@@ -3,7 +3,7 @@
 <head>
     <meta charset="UTF-8">
     <meta name="viewport" content="width=device-width, initial-scale=1.0">
-    <title>NeonChat — Neuer Charakter</title>
+    <title>NeonChat — {{ "Bearbeiten" if mode == "edit" else "Neuer Charakter" }}</title>
     <style>
         * { margin: 0; padding: 0; box-sizing: border-box; }
         body { font-family: 'Segoe UI', system-ui, sans-serif; background: #0a0a0f; color: #e0e0e8; min-height: 100vh; }
@@ -22,63 +22,78 @@
         .btn:hover { opacity: 0.9; }
         .btn-back { background: transparent; border: 1px solid #252535; color: #6b6b80; margin-right: 10px; }
         #models { margin-top: 4px; }
-        
         .section-header { font-size: 1rem; font-weight: 700; color: #8338ec; margin: 24px 0 12px; padding-bottom: 8px; border-bottom: 1px solid #252535; }
         .appearance-grid { display: grid; grid-template-columns: 1fr 1fr 1fr; gap: 12px; }
         .appearance-grid .form-group { margin-bottom: 12px; }
         @media (max-width: 600px) { .appearance-grid { grid-template-columns: 1fr; } }
+        .portrait-preview { display: flex; align-items: center; gap: 16px; margin-bottom: 16px; }
+        .portrait-preview img { width: 80px; height: 80px; border-radius: 50%; object-fit: cover; border: 2px solid #8338ec; }
+        .portrait-preview .info { font-size: 0.85rem; color: #6b6b80; }
     </style>
 </head>
 <body>
     <div class="container">
-        <h1>✦ Neuer Charakter</h1>
+        <h1>✦ {{ "Charakter bearbeiten" if mode == "edit" else "Neuer Charakter" }}</h1>
         <p class="subtitle">Definiere Persönlichkeit, Verhalten, Hintergrund und Aussehen.</p>
         
+        {% if mode == "edit" and character %}
+        <div class="portrait-preview">
+            <img id="portraitImg" src="/static/avatars/{{ character_filename }}.png?t={{ range(1,99999) | random }}" 
+                 onerror="this.style.display='none'; document.getElementById('portraitPlaceholder').style.display='flex'"
+                 style="display: block;">
+            <div id="portraitPlaceholder" style="display: none; width: 80px; height: 80px; border-radius: 50%; background: #1e1e2e; align-items: center; justify-content: center; font-size: 2rem;">{{ character.avatar | default('👤') }}</div>
+            <div class="info">
+                <b>{{ character.name }}</b><br>
+                Aktuelles Portrait. Beim Speichern und neu Generieren bleibt das Aussehen konsistent.
+            </div>
+        </div>
+        {% endif %}
+
         <form id="createForm">
             <div class="section-header">Basis</div>
             <div class="row">
                 <div class="form-group">
                     <label>Name</label>
-                    <input type="text" id="name" placeholder="z.B. Mara" required>
+                    <input type="text" id="name" placeholder="z.B. Mara" required value="{{ character.name if character else '' }}">
                 </div>
                 <div class="form-group" style="max-width: 80px;">
                     <label>Avatar</label>
-                    <input type="text" id="avatar" value="👤" maxlength="4" style="text-align: center; font-size: 1.5rem;">
+                    <input type="text" id="avatar" value="{{ character.avatar if character else '👤' }}" maxlength="4" style="text-align: center; font-size: 1.5rem;">
                 </div>
             </div>
             <div class="form-group">
                 <label>Kurze Beschreibung <span class="hint">(für die Übersicht)</span></label>
-                <input type="text" id="description" placeholder="z.B. Barista, 28, zynisch aber warmherzig">
+                <input type="text" id="description" placeholder="z.B. Barista, 28, zynisch aber warmherzig" value="{{ character.description if character else '' }}">
             </div>
 
             <div class="section-header">Persönlichkeit</div>
             <div class="form-group">
-                <label>Persönlichkeit <span class="hint">(wie ist der Charakter?)</span></label>
-                <textarea id="personality" placeholder="z.B. Trocken, sarkastisch, aber loyal."></textarea>
+                <label>Persönlichkeit</label>
+                <textarea id="personality" placeholder="z.B. Trocken, sarkastisch, aber loyal.">{{ character.personality if character else '' }}</textarea>
             </div>
             <div class="form-group">
-                <label>Hintergrund <span class="hint">(Wer ist der Charakter?)</span></label>
-                <textarea id="background" placeholder="z.B. Arbeitet seit 5 Jahren in einem Café..."></textarea>
+                <label>Hintergrund</label>
+                <textarea id="background" placeholder="z.B. Arbeitet seit 5 Jahren in einem Café...">{{ character.background if character else '' }}</textarea>
             </div>
             <div class="form-group">
-                <label>Verhalten <span class="hint">(wie verhält sich der Charakter?)</span></label>
-                <textarea id="behavior" placeholder="z.B. Flucht in Wortwitze wenn nervös."></textarea>
+                <label>Verhalten</label>
+                <textarea id="behavior" placeholder="z.B. Flucht in Wortwitze wenn nervös.">{{ character.behavior if character else '' }}</textarea>
             </div>
             <div class="form-group">
-                <label>Sprachstil <span class="hint">(wie spricht der Charakter?)</span></label>
-                <textarea id="tone" placeholder="z.B. Umgangssprachlich, 'ne' statt 'nicht'..."></textarea>
+                <label>Sprachstil</label>
+                <textarea id="tone" placeholder="z.B. Umgangssprachlich...">{{ character.tone if character else '' }}</textarea>
             </div>
             <div class="form-group">
-                <label>Szenario <span class="hint">(optional — wo spielt das Gespräch?)</span></label>
-                <input type="text" id="scenario" placeholder="z.B. Du sitzt in einem kleinen Café...">
+                <label>Szenario <span class="hint">(optional)</span></label>
+                <input type="text" id="scenario" placeholder="z.B. Du sitzt in einem Café..." value="{{ character.scenario if character else '' }}">
             </div>
             <div class="form-group">
                 <label>NSFW / Soziale Regeln <span class="hint">(optional)</span></label>
-                <textarea id="nsfw" placeholder="z.B. Keine Einschränkungen."></textarea>
+                <textarea id="nsfw" placeholder="z.B. Keine Einschränkungen.">{{ character.nsfw if character else '' }}</textarea>
             </div>
             <div class="form-group">
-                <label>Begrüßung <span class="hint">(erste Nachricht vom Bot)</span></label>
-                <textarea id="greeting" placeholder="z.B. *schaut auf* Na, wieder da?"></textarea>
+                <label>Begrüßung <span class="hint">(erste Nachricht)</span></label>
+                <textarea id="greeting" placeholder="z.B. *schaut auf* Na, wieder da?">{{ character.greeting if character else '' }}</textarea>
             </div>
 
             <div class="section-header">Aussehen <span class="hint" style="font-weight:400;">(für Portrait-Generierung)</span></div>
@@ -86,57 +101,57 @@
                 <div class="form-group">
                     <label>Stil</label>
                     <select id="app_style">
-                        <option value="anime">Anime</option>
-                        <option value="realistic">Realistisch</option>
-                        <option value="comic">Comic</option>
-                        <option value="cartoon">Cartoon</option>
-                        <option value="pixel">Pixel Art</option>
+                        <option value="anime" {{ 'selected' if character and character.appearance.style == 'anime' else '' }}>Anime</option>
+                        <option value="realistic" {{ 'selected' if character and character.appearance.style == 'realistic' else '' }}>Realistisch</option>
+                        <option value="comic" {{ 'selected' if character and character.appearance.style == 'comic' else '' }}>Comic</option>
+                        <option value="cartoon" {{ 'selected' if character and character.appearance.style == 'cartoon' else '' }}>Cartoon</option>
+                        <option value="pixel" {{ 'selected' if character and character.appearance.style == 'pixel' else '' }}>Pixel Art</option>
                     </select>
                 </div>
                 <div class="form-group">
                     <label>Geschlecht</label>
                     <select id="app_gender">
-                        <option value="female">Weiblich</option>
-                        <option value="male">Männlich</option>
-                        <option value="other">Divers</option>
+                        <option value="female" {{ 'selected' if character and character.appearance.gender == 'female' else '' }}>Weiblich</option>
+                        <option value="male" {{ 'selected' if character and character.appearance.gender == 'male' else '' }}>Männlich</option>
+                        <option value="other" {{ 'selected' if character and character.appearance.gender == 'other' else '' }}>Divers</option>
                     </select>
                 </div>
                 <div class="form-group">
                     <label>Alter</label>
-                    <input type="text" id="app_age" placeholder="z.B. 28">
+                    <input type="text" id="app_age" placeholder="z.B. 28" value="{{ character.appearance.age if character and character.appearance.age else '' }}">
                 </div>
                 <div class="form-group">
                     <label>Größe</label>
-                    <input type="text" id="app_height" placeholder="z.B. 168cm">
+                    <input type="text" id="app_height" placeholder="z.B. 168cm" value="{{ character.appearance.height if character and character.appearance.height else '' }}">
                 </div>
                 <div class="form-group">
                     <label>Statur</label>
-                    <input type="text" id="app_build" placeholder="z.B. schlank, athletisch">
+                    <input type="text" id="app_build" placeholder="z.B. schlank" value="{{ character.appearance.build if character and character.appearance.build else '' }}">
                 </div>
                 <div class="form-group">
                     <label>Haarfarbe</label>
-                    <input type="text" id="app_hair_color" placeholder="z.B. dunkelbraun">
+                    <input type="text" id="app_hair_color" placeholder="z.B. dunkelbraun" value="{{ character.appearance.hair_color if character and character.appearance.hair_color else '' }}">
                 </div>
                 <div class="form-group">
                     <label>Frisur</label>
-                    <input type="text" id="app_hair_style" placeholder="z.B. kurz, ungeordnet">
+                    <input type="text" id="app_hair_style" placeholder="z.B. kurz, ungeordnet" value="{{ character.appearance.hair_style if character and character.appearance.hair_style else '' }}">
                 </div>
                 <div class="form-group">
                     <label>Augenfarbe</label>
-                    <input type="text" id="app_eye_color" placeholder="z.B. braun">
+                    <input type="text" id="app_eye_color" placeholder="z.B. braun" value="{{ character.appearance.eye_color if character and character.appearance.eye_color else '' }}">
                 </div>
                 <div class="form-group">
                     <label>Haut</label>
-                    <input type="text" id="app_skin" placeholder="z.B. hell, gebräunt">
+                    <input type="text" id="app_skin" placeholder="z.B. hell" value="{{ character.appearance.skin if character and character.appearance.skin else '' }}">
                 </div>
             </div>
             <div class="form-group">
                 <label>Kleidung</label>
-                <input type="text" id="app_clothing" placeholder="z.B. Café-Schürze, schwarzes T-Shirt, Jeans">
+                <input type="text" id="app_clothing" placeholder="z.B. Café-Schürze, Jeans" value="{{ character.appearance.clothing if character and character.appearance.clothing else '' }}">
             </div>
             <div class="form-group">
                 <label>Besondere Merkmale</label>
-                <input type="text" id="app_distinctive" placeholder="z.B. müde Augen, Augenringe, Kaugummi">
+                <input type="text" id="app_distinctive" placeholder="z.B. müde Augen, Augenringe" value="{{ character.appearance.distinctive if character and character.appearance.distinctive else '' }}">
             </div>
 
             <div class="section-header">Modell</div>
@@ -149,25 +164,32 @@
                     <div id="models" style="font-size: 0.8rem; color: #4b4b60;"></div>
                 </div>
                 <div class="form-group" style="max-width: 100px;">
-                    <label>Temperatur <span class="hint">(Kreativität)</span></label>
-                    <input type="number" id="temperature" value="0.8" min="0.1" max="2.0" step="0.1">
+                    <label>Temperatur</label>
+                    <input type="number" id="temperature" value="{{ character.temperature if character and character.temperature else 0.8 }}" min="0.1" max="2.0" step="0.1">
                 </div>
             </div>
 
             <div style="margin-top: 24px;">
                 <button type="button" class="btn btn-back" onclick="location.href='/'">← Abbrechen</button>
-                <button type="submit" class="btn">Charakter erstellen</button>
+                <button type="submit" class="btn">{{ "Speichern" if mode == "edit" else "Charakter erstellen" }}</button>
             </div>
         </form>
     </div>
 
     <script>
+        const mode = "{{ mode }}";
+        const characterFilename = "{{ character_filename if mode == 'edit' else '' }}";
+
+        // Load models
         fetch('/api/models').then(r => r.json()).then(data => {
             const select = document.getElementById('model');
             if (data.models) {
                 data.models.forEach(m => {
                     const opt = document.createElement('option');
                     opt.value = m; opt.textContent = m;
+                    {% if character and character.model %}
+                    if (m === "{{ character.model }}") opt.selected = true;
+                    {% endif %}
                     select.appendChild(opt);
                 });
             }
@@ -203,6 +225,20 @@
                     distinctive: document.getElementById('app_distinctive').value,
                 }
             };
+
+            if (mode === 'edit') {
+                // Update existing
+                const resp = await fetch(`/api/character/update/${characterFilename}`, {
+                    method: 'POST',
+                    headers: {'Content-Type': 'application/json'},
+                    body: JSON.stringify(data)
+                });
+                const result = await resp.json();
+                if (result.status === 'ok') {
+                    location.href = '/chat/' + encodeURIComponent(characterFilename);
+                }
+            } else {
+                // Create new
                 const resp = await fetch('/api/character/create', {
                     method: 'POST',
                     headers: {'Content-Type': 'application/json'},
@@ -212,6 +248,7 @@
                 if (result.status === 'ok') {
                     location.href = '/chat/' + encodeURIComponent(result.character);
                 }
+            }
         });
     </script>
 </body>

templates/index.html

@@ -56,6 +56,7 @@
                     <h3>{{ c.name }}</h3>
                     <p>{{ c.description[:80] }}{% if c.description|length > 80 %}...{% endif %}</p>
                 </div>
+                <a href="/edit/{{ c.filename | urlencode }}" onclick="event.stopPropagation()" style="color: #6b6b80; text-decoration: none; font-size: 1.1rem; padding: 4px 8px;" title="Bearbeiten">✏️</a>
             </div>
             {% endfor %}
             <div class="new-card" onclick="location.href='/create'">