fix(camera): share one ffmpeg connection for /api/camera/stream

Manually integrated from PR #91 (Pavulon87) - the PR branch itself had
unresolved git conflict markers in handle_camera_stream from a stale
rebase against nightly, so it couldn't be merged directly.

/api/camera/stream previously spawned a dedicated ffmpeg process and
printer connection per HTTP client. The printer only tolerates a very
limited number of concurrent camera connections, so two simultaneous
viewers (dashboard + a Moonraker client, two browser tabs, ...) could
already exhaust that limit and cause intermittent 429/"stream
unavailable" failures.

Adds a third CameraCache fanout channel (mjpeg_subscribers), mirroring
the existing h264 pattern, so all /api/camera/stream consumers share one
ffmpeg process. Also carries over two related fixes found in the PR:
ensure_running() checked self._proc_* instead of self._task_*, leaving a
race window where two callers could each spawn a duplicate ffmpeg
process before the first task got scheduled; and reset() didn't cancel
the owning task, so a loop stuck in its exponential backoff sleep (up to
300s) wouldn't restart immediately.

CHANGELOG.md

@@ -3,6 +3,17 @@
 ## [Unreleased]
 
 ### Fixed
+- **Slot kept showing/printing a stale filament type after a spool swap.** The
+  per-slot profile override (config.ini `[filament_profiles]`) stores only
+  vendor+name and was sticky: swapping the physical filament updated the AMS
+  colour and type live, but the saved profile persisted, so a slot that held
+  e.g. "KINGROON PETG Basic" kept showing/sending PETG in the panel and the
+  OrcaSlicer lane hint even after yellow PLA was loaded — and survived restarts.
+  The override is now applied only while its material *family* still matches the
+  loaded AMS material (PLA / PLA+ / PLA SILK / PLA MATTE are one family, so
+  within-family swaps never invalidate a valid profile). On a family change the
+  slot falls back to the generic default; the override is not deleted, so
+  reloading the original material reactivates it.
 - **Filament profiles not isolated between printers in a multi-printer bridge**
   (issue #74). The slot→profile mapping and `visible_vendors` were stored in a
   single global `[filament_profiles]` section, so configuring one printer

NIGHTLY_CHANGELOG.md

@@ -1,8 +1,5 @@
 ## Changes in this build
 
-- Fix: the poll interval setting was saved to config.ini but never actually applied — the poll loop always used a hardcoded 3s wait
-- Fix: Spoolman status showed a green "connected" dot even when the server was unreachable — reachability is now rechecked periodically and shown accurately (green/red)
-- Fix: **settings could silently revert after saving** — the bridge restart that applies settings didn't clean up all the relevant environment variables, so the old value could win over the one just saved (affected poll interval, resonance compensation, Docker host IP, and the new HTTP log toggle below). Fixed at the root so this class of bug can't recur for future settings.
-- Feat: new "Log every HTTP request (verbose)" toggle in Settings — off by default, since aiohttp's per-request access log was drowning out the bridge's own logs with the frontend's 2s polling
-
-**A stable release is coming soon** with the fixes and features from the last several nightly builds. As usual it will be published as ready-to-run binaries (Linux amd64/arm64, Windows) alongside the Docker image.
+- Fix: dashboard reprint from the cache path crashed with an AttributeError (`self._db` did not exist) instead of applying the filament slot filter (PR #93, thanks @Pavulon87)
+- Feat: the dashboard now shows a banner with the reason and error code when a print is paused, with a direct link to the Anycubic error-code docs (PR #92, thanks @Pavulon87)
+- Fix: `/api/camera/stream` (the MJPEG live view used by the dashboard and every Moonraker-compatible client) opened a brand-new ffmpeg process and printer connection per HTTP client — two simultaneous viewers could already exhaust the printer's very limited camera connection slots and cause intermittent "stream unavailable"/429 failures. All consumers now share one ffmpeg process via the same fanout pattern already used for the H.264 stream (credit to @Pavulon87 for the fix and for finding two related race conditions along the way)

kobrax_moonraker_bridge.py

@@ -588,15 +588,23 @@ class GCodeStore:
 class CameraCache:
     """Zentraler Kamera-Demuxer.
 
-    Keeps ONE ffmpeg process open that reads the FLV stream from the printer
-    and produces two outputs in parallel:
+    Keeps ONE ffmpeg process per output type open that reads the FLV stream
+    from the printer and produces:
       - MJPEG @ 2fps -> last frame in RAM for /api/camera/snapshot
       - MPEG-TS (-c:v copy) -> fanout to all /api/camera/h264 subscribers
+      - MJPEG @ 15fps/640px -> fanout to all /api/camera/stream subscribers
+        (the live-view used by the dashboard AND by every Moonraker-compatible
+        client, since server.webcams.list advertises this same stream_url)
 
     Damit:
-      * Only ONE FLV connection to the printer (solves the single-client limit / 429)
+      * Only ONE FLV connection to the printer per output type (solves the
+        single-client limit / 429) - previously /api/camera/stream opened a
+        brand-new, uncached ffmpeg + printer connection per HTTP client, which
+        competed with the cached jpeg/h264 connections for the printer's very
+        limited number of concurrent camera clients and caused intermittent
+        "stream unavailable" failures.
       * Snapshots are instant (memory read, no ffmpeg spawn per request)
-      * Multiple parallel H.264 consumers possible (plugin + web UI + ...)
+      * Multiple parallel H.264/MJPEG consumers possible (plugin + web UI + ...)
 
     Lazy start on the first consumer, auto-restart on ffmpeg crash.
     """
@@ -610,40 +618,77 @@ class CameraCache:
         self.latest_jpeg: bytes = b""
         self.latest_jpeg_ts: float = 0.0
         self.h264_subscribers: "set[asyncio.Queue[bytes]]" = set()
+        self.mjpeg_subscribers: "set[asyncio.Queue[bytes]]" = set()
         self._proc_jpeg: "asyncio.subprocess.Process | None" = None
         self._proc_h264: "asyncio.subprocess.Process | None" = None
+        self._proc_mjpeg: "asyncio.subprocess.Process | None" = None
         self._task_jpeg: "asyncio.Task | None" = None
         self._task_h264: "asyncio.Task | None" = None
+        self._task_mjpeg: "asyncio.Task | None" = None
         self._lock = asyncio.Lock()
         self._fail_count_jpeg: int = 0
         self._fail_count_h264: int = 0
+        self._fail_count_mjpeg: int = 0
 
     def set_url(self, url: str):
         self._url = url
 
     def reset(self):
-        """Reset backoff counters and kill running ffmpeg processes."""
+        """Reset backoff counters and forcefully tear down any running
+        ffmpeg loops - including cancelling their background tasks.
+
+        Only killing the ffmpeg subprocess is not enough: the owning task
+        might currently be sitting in `await asyncio.sleep(delay)` from a
+        previous exponential backoff (up to 300s) after an earlier failure.
+        Resetting the fail-count doesn't wake it up early, so a user
+        clicking "reset" could see nothing happen for minutes. Cancelling
+        the task guarantees an immediate, clean restart on the next
+        ensure_running() call.
+        """
         self._fail_count_jpeg = 0
         self._fail_count_h264 = 0
-        for proc in (self._proc_jpeg, self._proc_h264):
+        self._fail_count_mjpeg = 0
+        for task in (self._task_jpeg, self._task_h264, self._task_mjpeg):
+            if task is not None and not task.done():
+                task.cancel()
+        for proc in (self._proc_jpeg, self._proc_h264, self._proc_mjpeg):
             if proc is not None:
                 try:
                     proc.kill()
                 except Exception:
                     pass
+        self._task_jpeg = self._task_h264 = self._task_mjpeg = None
+        self._proc_jpeg = self._proc_h264 = self._proc_mjpeg = None
 
     async def ensure_running(self):
-        if self._proc_jpeg is None or self._proc_jpeg.returncode is not None:
+        # NOTE: we check the *task* state, not self._proc_* - the process
+        # handle is only assigned later, inside the task body, once ffmpeg
+        # has actually been spawned. Checking self._proc_* here left a race
+        # window: two callers arriving before the newly-created task got a
+        # chance to run would both see "no process yet" and each spawn a
+        # duplicate ffmpeg + duplicate printer connection, silently
+        # orphaning the older one (whichever task's coroutine runs last
+        # overwrites the shared self._proc_* reference, so nobody keeps a
+        # handle to kill the earlier orphaned process). Task creation is
+        # synchronous, so checking self._task_* here is race-free.
+        if self._task_jpeg is None or self._task_jpeg.done():
             self._task_jpeg = asyncio.create_task(self._run_jpeg_loop())
-        if self._proc_h264 is None or self._proc_h264.returncode is not None:
+        if self._task_h264 is None or self._task_h264.done():
             self._task_h264 = asyncio.create_task(self._run_h264_loop())
+        if self._task_mjpeg is None or self._task_mjpeg.done():
+            self._task_mjpeg = asyncio.create_task(self._run_mjpeg_loop())
 
     def _input_args(self, url: str) -> list[str]:
         args = ["-fflags", "nobuffer", "-flags", "low_delay"]
         if url.lower().startswith("rtsp://"):
             args += ["-probesize", "32", "-analyzeduration", "0", "-rtsp_transport", "tcp"]
         else:
-            args += ["-probesize", "500000", "-analyzeduration", "500000"]
+            # The printer's FLV source occasionally emits non-monotonic container
+            # timestamps (PTS jumps of days) while the video data itself stays
+            # valid. Without this flag ffmpeg's realtime pacing breaks on such a
+            # jump and the stream stalls after ~15-30 min (Issue #90).
+            args += ["-use_wallclock_as_timestamps", "1",
+                     "-probesize", "500000", "-analyzeduration", "500000"]
         return args
 
     async def _run_jpeg_loop(self):
@@ -790,6 +835,98 @@ class CameraCache:
                 self._fail_count_h264 = 0
                 await asyncio.sleep(2.0)
 
+    async def _run_mjpeg_loop(self):
+        """Keeps an ffmpeg process alive that fans out MJPEG@15fps/640px
+        (complete JPEG frames) to all /api/camera/stream subscribers."""
+        while True:
+            url = self._url
+            if not url:
+                await asyncio.sleep(2.0)
+                continue
+            try:
+                proc = await asyncio.create_subprocess_exec(
+                    _find_ffmpeg(), "-loglevel", "warning",
+                    *self._input_args(url), "-i", url,
+                    "-vf", "fps=15,scale=640:-1",
+                    "-f", "image2pipe", "-vcodec", "mjpeg", "-q:v", "3",
+                    "-flush_packets", "1", "pipe:1",
+                    stdout=asyncio.subprocess.PIPE,
+                    stderr=asyncio.subprocess.PIPE,
+                )
+                self._proc_mjpeg = proc
+            except Exception as e:
+                log.warning(f"CameraCache: ffmpeg-mjpeg start failed: {e}")
+                await asyncio.sleep(3.0)
+                continue
+
+            buf = b""
+            rc = None
+            try:
+                while True:
+                    chunk = await proc.stdout.read(self.TS_CHUNK)
+                    if not chunk:
+                        break
+                    buf += chunk
+                    # extract complete JPEG frames and fan them out whole
+                    # (so every subscriber gets clean multipart boundaries,
+                    # not arbitrary byte chunks like the h264/mpegts fanout)
+                    while True:
+                        start = buf.find(self.JPEG_SOI)
+                        if start == -1:
+                            buf = b""
+                            break
+                        end = buf.find(self.JPEG_EOI, start + 2)
+                        if end == -1:
+                            buf = buf[start:]
+                            break
+                        frame = buf[start:end + 2]
+                        buf = buf[end + 2:]
+                        for q in list(self.mjpeg_subscribers):
+                            if q.full():
+                                try:
+                                    q.get_nowait()
+                                except Exception:
+                                    pass
+                            try:
+                                q.put_nowait(frame)
+                            except Exception:
+                                pass
+            except Exception as e:
+                log.debug(f"CameraCache: mjpeg-loop unterbrochen: {e}")
+            finally:
+                # NOTE: cleanup operates on the local `proc` reference, not
+                # on self._proc_mjpeg. If this task got cancelled (e.g. by
+                # reset()) a new task may already have started and assigned
+                # its own process to self._proc_mjpeg by the time we reach
+                # here - killing that shared attribute instead of our own
+                # local proc would kill the WRONG (newer) process.
+                try:
+                    proc.kill()
+                except Exception:
+                    pass
+                try:
+                    await proc.wait()
+                except Exception:
+                    pass
+                rc = proc.returncode
+                if rc:
+                    try:
+                        err = await proc.stderr.read(500)
+                        if err:
+                            log.warning(f"CameraCache: ffmpeg-mjpeg stderr: {err.decode(errors='replace').strip()}")
+                    except Exception:
+                        pass
+                if self._proc_mjpeg is proc:
+                    self._proc_mjpeg = None
+            if rc:
+                self._fail_count_mjpeg += 1
+                delay = min(2.0 * (2 ** self._fail_count_mjpeg), 300.0)
+                log.warning(f"CameraCache: ffmpeg-mjpeg exit {rc}, retry in {delay:.0f}s (Versuch {self._fail_count_mjpeg})")
+                await asyncio.sleep(delay)
+            else:
+                self._fail_count_mjpeg = 0
+                await asyncio.sleep(2.0)
+
 
 class SpoolmanClient:
     """Thin synchronous HTTP client for Spoolman filament tracking.
@@ -888,6 +1025,8 @@ class KobraXBridge:
           "filament_mode":      "toolhead",
           "supplies_usage":     0,
           "ace_drying": {"status": 0, "target_temp": 0, "duration": 0, "remain_time": 0, "humidity": None, "current_temp": None},
+          "error_code":         0,
+          "pause_msg":          "",
         }
         self._ams_slots: list[dict] = []       # flat global list; each entry has global_index + box_id
         self._ams_loaded_slot: int = -1        # global slot index of currently loaded slot
@@ -1200,6 +1339,17 @@ class KobraXBridge:
         elif kobra_state in ("free", "finished", "stoped", "canceled"):
             self._camera_autostarted = False
             self._camera_user_stopped = False  # release for the next print
+        
+        if kobra_state in ("pause", "paused"):
+            pause_msg = payload.get("msg", "")
+            if pause_msg:
+                error_code = payload.get("code", 0)
+                self._state["error_code"] = error_code
+                self._state["pause_msg"] = pause_msg
+                log.warning(f"Printer paused: [{error_code}] {pause_msg}")
+        elif kobra_state in ("resuming", "resumed", "printing", "finished", "stoped", "canceled"):
+            self._state["error_code"] = 0
+            self._state["pause_msg"] = ""
 
         # Job-History: Druckstart erkennen
         if kobra_state == "printing" and not self._current_job_id:
@@ -1917,6 +2067,55 @@ class KobraXBridge:
             return _ALIASES[m]
         return m
 
+    @staticmethod
+    def _material_family(mat: str) -> str:
+        """Reduce a material to its base polymer family.
+
+        PLA / PLA+ / PLA SILK / PLA MATTE -> "PLA"; PETG / PETG+ -> "PETG"; etc.
+        Used by the stale-profile guard: only a change of *family* (e.g. PETG ->
+        PLA) invalidates a saved slot profile — a change within the family
+        (PLA -> PLA SILK) must not discard an otherwise valid profile.
+        """
+        if not mat:
+            return ""
+        m = KobraXBridge._normalize_material(mat)
+        # Longer prefixes first so "PETG" is not swallowed by "PET".
+        for fam in ("PETG", "PLA", "ABS", "ASA", "TPU", "PVA", "HIPS", "PA", "PC", "PET"):
+            if m.startswith(fam):
+                return fam
+        return m
+
+    def _profile_material(self, profile: dict) -> str:
+        """Material type (e.g. "PETG") of a saved slot profile, resolved by
+        (vendor, name) from the Orca filament library. Returns "" when the
+        profile is not in the library — we do NOT guess in that case."""
+        name = (profile or {}).get("name", "")
+        if not name:
+            return ""
+        vendor = profile.get("vendor", "")
+        for p in self._load_orca_filaments():
+            if p.get("vendor") == vendor and p.get("name") == name:
+                return p.get("type", "") or ""
+        return ""
+
+    def _effective_slot_profile(self, global_idx: int, ams_material: str) -> dict:
+        """Saved slot-profile override — but only while its material *family*
+        still matches the material currently loaded in the AMS.
+
+        Non-destructive suppression (Option A): when the family no longer matches
+        (e.g. a PETG profile but PLA loaded) we return {} → the slot falls back to
+        the generic default. The override stays in config.ini and reactivates as
+        soon as the matching material is loaded again. When the profile's family
+        is unknown we do NOT suppress (fail-safe)."""
+        profile = self._filament_profiles.get(global_idx) or {}
+        if not profile.get("name"):
+            return {}
+        prof_fam = self._material_family(self._profile_material(profile))
+        ams_fam  = self._material_family(ams_material)
+        if prof_fam and ams_fam and prof_fam != ams_fam:
+            return {}
+        return profile
+
     def _build_lane_data(self) -> dict:
       """Builds BBL AMS JSON for OrcaSlicer DevFilaSystemParser::ParseV1_0.
 
@@ -1965,7 +2164,10 @@ class KobraXBridge:
             #   1. User-Wahl (config.ini [filament_profiles]) — exakte Kontrolle
             #   2. Generic fallback (_TRAY_INFO_IDX) per material type - no
             #      vendor hint; OrcaSlicer then picks its own generic preset
-            user_profile = self._filament_profiles.get(slot_index) or {}
+            # Stale-profile guard: only apply the override while its material
+            # family still matches the loaded filament (PETG profile + PLA
+            # loaded -> dropped).
+            user_profile = self._effective_slot_profile(slot_index, material)
             if user_profile.get("name"):
                 vendor    = user_profile.get("vendor", "")
                 fila_name = user_profile.get("name", "")
@@ -2145,7 +2347,9 @@ class KobraXBridge:
         # preset name -> 'Anycubic PLA' matches the printer-specific
         # preset; an empty string previously led to Generic PLA.
         if occupied:
-          user_profile = self._filament_profiles.get(_global_index) or {}
+          # Stale-profile guard (see _effective_slot_profile): only apply the
+          # override while its material family still matches the loaded filament.
+          user_profile = self._effective_slot_profile(_global_index, material)
           fila_name = user_profile.get("name") or self._default_filament_name(material)
           gate_filament_name.append(fila_name)
         else:
@@ -2484,7 +2688,9 @@ class KobraXBridge:
         slots = []
         for i, s in enumerate(self._ams_slots):
             gidx = int(s.get("global_index", i))
-            profile = self._filament_profiles.get(gidx) or {}
+            # Stale-profile guard: only show the override while its material
+            # family matches the loaded AMS material (else slot has no brand).
+            profile = self._effective_slot_profile(gidx, s.get("type", ""))
             slots.append({
                 "slot_index":  gidx,
                 "material":    s.get("type", ""),
@@ -3573,7 +3779,7 @@ class KobraXBridge:
             # filter applies and empty/shifted slots are not mapped incorrectly.
             gcode_filaments = None
             try:
-                db_file = self._db.get_file_by_name(filename)
+                db_file = self._store.get_file_by_name(filename)
                 if db_file and db_file.get("gcode_filaments"):
                     gcode_filaments = json.loads(db_file["gcode_filaments"])
             except Exception as e:
@@ -3703,21 +3909,33 @@ class KobraXBridge:
         # (only the bare HTML) -> without inlining neither
         # a single button works there (Issue #29). It is equally correct in a normal browser.
         base = os.path.join(_WEB_BASE, "web", "themes", self._ui_theme)
-        try:
-            css = pathlib.Path(os.path.join(base, "style.css")).read_text(encoding="utf-8")
-            page = page.replace(
-                '<link rel="stylesheet" href="/kx/ui/style.css">',
-                "<style>\n" + css + "\n</style>")
-        except OSError:
-            pass
-        try:
-            js = pathlib.Path(os.path.join(base, "app.js")).read_text(encoding="utf-8")
-            js = js.replace("'__VERSION__'", f"'{self._read_version()}'")
-            page = page.replace(
-                '<script src="/kx/ui/app.js"></script>',
-                "<script>\n" + js + "\n</script>")
-        except OSError:
-            pass
+
+        # Inline vendored lib CSS/JS too — the OrcaSlicer webview loads no
+        # external <link>/<script src>, so GridStack (and its stylesheet) must
+        # be embedded like style.css/app.js. Order matters: GridStack's <script>
+        # sits in <head>, before app.js, so it is defined when app.js inits.
+        def _inline_css(rel_path: str, link_tag: str):
+            nonlocal page
+            try:
+                data = pathlib.Path(os.path.join(base, rel_path)).read_text(encoding="utf-8")
+                page = page.replace(link_tag, "<style>\n" + data + "\n</style>")
+            except OSError:
+                pass
+
+        def _inline_js(rel_path: str, script_tag: str, version_sub: bool = False):
+            nonlocal page
+            try:
+                data = pathlib.Path(os.path.join(base, rel_path)).read_text(encoding="utf-8")
+                if version_sub:
+                    data = data.replace("'__VERSION__'", f"'{self._read_version()}'")
+                page = page.replace(script_tag, "<script>\n" + data + "\n</script>")
+            except OSError:
+                pass
+
+        _inline_css("lib/gridstack.min.css", '<link rel="stylesheet" href="/kx/ui/lib/gridstack.min.css">')
+        _inline_js("lib/gridstack-all.min.js", '<script src="/kx/ui/lib/gridstack-all.min.js"></script>')
+        _inline_css("style.css", '<link rel="stylesheet" href="/kx/ui/style.css">')
+        _inline_js("app.js", '<script src="/kx/ui/app.js"></script>', version_sub=True)
 
         return web.Response(text=page, content_type="text/html",
                             headers={"Cache-Control": "no-store, no-cache, must-revalidate"})
@@ -4065,10 +4283,15 @@ class KobraXBridge:
         Useful after a 429 lock (Retry-After expired) or after a printer restart."""
         self.camera_cache.reset()
         url = self._state.get("camera_url", "")
-        if url:
-            self.camera_cache.set_url(url)
-            await self.camera_cache.ensure_running()
-        return web.json_response({"result": "ok"})
+        if not url:
+            log.warning("Camera reset requested but no camera_url is known yet (waiting for printer status)")
+            return web.json_response({
+                "result": "no_url",
+                "message": "No camera URL known yet - wait for the next printer status update, or start a print/enable the camera first.",
+            })
+        self.camera_cache.set_url(url)
+        await self.camera_cache.ensure_running()
+        return web.json_response({"result": "ok", "url": url})
 
     async def handle_api_camera_snapshot(self, request):
         """Last JPEG frame from the CameraCache - instant from RAM,
@@ -4076,10 +4299,10 @@ class KobraXBridge:
         printer and is ~1 s faster)."""
         url = self._state.get("camera_url", "")
         if not url:
-            return web.Response(status=503, text="Keine Kamera-URL bekannt")
+            return web.Response(status=503, text="No camera URL known")
         self.camera_cache.set_url(url)
         await self.camera_cache.ensure_running()
-        # Initialer Warmup: bis zu 5 s auf ersten Frame warten
+        # Initial warmup: wait up to 5s for the first frame
         deadline = time.time() + 5.0
         while not self.camera_cache.latest_jpeg and time.time() < deadline:
             await asyncio.sleep(0.1)
@@ -4095,43 +4318,26 @@ class KobraXBridge:
         return web.Response(body=jpeg, content_type="image/jpeg", headers=headers)
 
     async def handle_camera_stream(self, request):
-        """MJPEG proxy: FLV → MJPEG via ffmpeg, served as multipart/x-mixed-replace."""
+        """MJPEG live view, served as multipart/x-mixed-replace.
+
+        Fed from the central CameraCache fanout (same pattern as
+        handle_camera_h264) instead of spawning a dedicated ffmpeg process
+        per HTTP client. The printer's camera server only tolerates a very
+        limited number of concurrent connections (see CameraCache docstring)
+        - previously every consumer of this endpoint (dashboard, OrcaSlicer,
+        moonraker-obico, a second browser tab, ...) opened its own separate
+        connection, so two simultaneous viewers could already exhaust the
+        printer's connection limit and cause intermittent "stream
+        unavailable" failures. Now all consumers share one connection.
+        """
         url = self._state.get("camera_url", "")
         if not url:
-            return web.Response(status=503, text="Keine Kamera-URL bekannt")
+            return web.Response(status=503, text="No camera URL known")
+        self.camera_cache.set_url(url)
+        await self.camera_cache.ensure_running()
 
-        is_rtsp = url.lower().startswith("rtsp://")
-        ffmpeg_input_args = [
-            "-fflags", "nobuffer",
-            "-flags", "low_delay",
-        ]
-        if is_rtsp:
-            ffmpeg_input_args += ["-probesize", "32", "-analyzeduration", "0", "-rtsp_transport", "tcp"]
-        else:
-            ffmpeg_input_args += ["-probesize", "1000000", "-analyzeduration", "1000000"]
-
-        # Start ffmpeg BEFORE the StreamResponse is opened
-        # (so we can still send a normal HTTP response on error)
-        try:
-            proc = await asyncio.create_subprocess_exec(
-                _find_ffmpeg(), "-loglevel", "quiet",
-                *ffmpeg_input_args,
-                "-i", url,
-                "-vf", "fps=15,scale=640:-1",
-                "-f", "image2pipe",
-                "-vcodec", "mjpeg",
-                "-q:v", "3",
-                "-flush_packets", "1",
-                "pipe:1",
-                stdout=asyncio.subprocess.PIPE,
-                stderr=asyncio.subprocess.DEVNULL,
-            )
-        except (FileNotFoundError, OSError) as e:
-            log.warning("Camera: ffmpeg not found – camera stream unavailable")
-            return web.Response(status=503, text="ffmpeg not found")
-        except Exception as e:
-            log.warning(f"Camera: could not start ffmpeg: {e}")
-            return web.Response(status=503, text=str(e))
+        q: asyncio.Queue[bytes] = asyncio.Queue(maxsize=8)
+        self.camera_cache.mjpeg_subscribers.add(q)
 
         boundary = "kobraxframe"
         resp = web.StreamResponse(headers={
@@ -4140,46 +4346,24 @@ class KobraXBridge:
             "Connection": "keep-alive",
         })
         await resp.prepare(request)
-
-        buf = b""
         try:
             while True:
-                chunk = await proc.stdout.read(65536)
-                if not chunk:
+                frame = await q.get()
+                header = (
+                    f"--{boundary}\r\n"
+                    f"Content-Type: image/jpeg\r\n"
+                    f"Content-Length: {len(frame)}\r\n\r\n"
+                ).encode()
+                try:
+                    await resp.write(header + frame + b"\r\n")
+                except (ConnectionResetError, asyncio.CancelledError):
+                    break
+                except Exception:
                     break
-                buf += chunk
-                # Extract complete JPEG frames (SOI=FFD8, EOI=FFD9)
-                while True:
-                    start = buf.find(b"\xff\xd8")
-                    if start == -1:
-                        buf = b""
-                        break
-                    end = buf.find(b"\xff\xd9", start + 2)
-                    if end == -1:
-                        buf = buf[start:]
-                        break
-                    frame = buf[start:end + 2]
-                    buf = buf[end + 2:]
-                    header = (
-                        f"--{boundary}\r\n"
-                        f"Content-Type: image/jpeg\r\n"
-                        f"Content-Length: {len(frame)}\r\n\r\n"
-                    ).encode()
-                    try:
-                        await resp.write(header + frame + b"\r\n")
-                    except Exception:
-                        return resp
         except Exception as e:
             log.warning(f"Camera stream interrupted: {e}")
         finally:
-            try:
-                proc.kill()
-            except Exception:
-                pass
-            try:
-                await proc.wait()
-            except Exception:
-                pass
+            self.camera_cache.mjpeg_subscribers.discard(q)
 
         return resp
 
@@ -4189,7 +4373,7 @@ class KobraXBridge:
         additional FLV connection to the printer (single-client limit)."""
         url = self._state.get("camera_url", "")
         if not url:
-            return web.Response(status=503, text="Keine Kamera-URL bekannt")
+            return web.Response(status=503, text="No camera URL known")
         self.camera_cache.set_url(url)
         await self.camera_cache.ensure_running()
 
@@ -4284,6 +4468,8 @@ class KobraXBridge:
             "file_ready":       s["file_ready"],
             "print_start_dialog": s.get("print_start_dialog", getattr(self._args, "print_start_dialog", 1)),
             "version":          self._read_version(),
+            "pause_msg":        s.get("pause_msg", ""),
+            "error_code":       s.get("error_code", 0),
         })
 
     async def handle_moonraker_database(self, request):

start.sh

@@ -1,10 +1,12 @@
 #!/usr/bin/env bash
-# start.sh – KX-Bridge starten (baut Docker-Image automatisch wenn nötig)
+# start.sh – KX-Bridge starten (zieht das fertige Image aus der Registry)
 
 set -euo pipefail
 
 cd "$(dirname "$0")"
 
+IMAGE_BASE="gitea.it-drui.de/viewit/kx-bridge"
+
 # .env anlegen falls nicht vorhanden
 if [[ ! -f .env ]]; then
     if [[ -f .env.example ]]; then
@@ -30,38 +32,38 @@ if ! docker info > /dev/null 2>&1; then
     exit 1
 fi
 
-# Prüfen ob Build nötig ist
-NEEDS_BUILD=0
-if ! docker image inspect kx-bridge:latest > /dev/null 2>&1; then
-    echo "[start] Image nicht vorhanden – baue kx-bridge:latest ..."
-    NEEDS_BUILD=1
+# Release-Kanal abfragen
+CHANNEL=""
+if [[ "${1:-}" == "stable" || "${1:-}" == "nightly" ]]; then
+    CHANNEL="$1"
 else
-    # Image-Erstellungszeit in Unix-Sekunden
-    IMAGE_TS=$(docker inspect --format='{{.Created}}' kx-bridge:latest \
-        | python3 -c "import sys,datetime; s=sys.stdin.read().strip(); \
-          s=s[:26].rstrip('Z').replace('T',' '); \
-          print(int(datetime.datetime.fromisoformat(s).replace(tzinfo=datetime.timezone.utc).timestamp()))" 2>/dev/null || echo 0)
-
-    for f in Dockerfile \
-              bridge/kobrax_moonraker_bridge.py \
-              bridge/kobrax_client.py \
-              bridge/env_loader.py \
-              bridge/requirements.txt \
-              bridge/anycubic_slicer.crt \
-              bridge/anycubic_slicer.key; do
-        if [[ -f "$f" ]]; then
-            FILE_TS=$(python3 -c "import os; print(int(os.path.getmtime('$f')))" 2>/dev/null || echo 0)
-            if [[ $FILE_TS -gt $IMAGE_TS ]]; then
-                echo "[start] '$f' ist neuer als das Image – baue neu ..."
-                NEEDS_BUILD=1
-                break
-            fi
-        fi
-    done
+    echo ""
+    echo "  Welchen Release-Kanal möchtest du starten?"
+    echo "    1) stable   (empfohlen)"
+    echo "    2) nightly  (getestete Vorabversion)"
+    echo -n "  Auswahl [1]: "
+    read -r CHOICE
+    case "$CHOICE" in
+        2) CHANNEL="nightly" ;;
+        *) CHANNEL="stable" ;;
+    esac
 fi
 
-if [[ $NEEDS_BUILD -eq 1 ]]; then
-    docker build -t kx-bridge:latest .
+if [[ "$CHANNEL" == "nightly" ]]; then
+    IMAGE_TAG="nightly"
+else
+    IMAGE_TAG="latest"
+fi
+IMAGE="$IMAGE_BASE:$IMAGE_TAG"
+
+echo "[start] Kanal: $CHANNEL  →  Image: $IMAGE"
+echo "[start] Ziehe aktuelles Image ..."
+docker pull "$IMAGE"
+
+# docker-compose.yml auf den gewählten Kanal umschreiben (nur die image-Zeile)
+if [[ -f docker-compose.yml ]]; then
+    sed -i.bak -E "s#^(\s*image:\s*).*#\1$IMAGE#" docker-compose.yml
+    rm -f docker-compose.yml.bak
 fi
 
 # Container starten
@@ -70,7 +72,7 @@ docker-compose down 2>/dev/null || true
 docker-compose up -d
 
 echo ""
-echo "  ✓ KX-Bridge läuft"
+echo "  ✓ KX-Bridge läuft ($CHANNEL)"
 echo "  Web-UI : http://$(hostname -I | awk '{print $1}'):7125"
 echo "  Logs   : docker-compose logs -f"
 echo "  Stop   : docker-compose down"

tests/conftest.py

@@ -2,12 +2,13 @@
 Shared fixtures für KX-Bridge Tests.
 Startet die Bridge in-process mit einem Mock-MQTT-Client (kein Drucker nötig).
 """
-import sys, types, argparse, pytest, pytest_asyncio
+import sys, types, argparse, tempfile, pytest, pytest_asyncio
 from unittest.mock import MagicMock
 from aiohttp.test_utils import TestClient, TestServer
 
 # ── Pfad ──────────────────────────────────────────────────────────────────────
-sys.path.insert(0, str(__import__("pathlib").Path(__file__).parent.parent / "bridge"))
+# Flat repo layout (no bridge/ subfolder anymore) — point at the repo root.
+sys.path.insert(0, str(__import__("pathlib").Path(__file__).parent.parent))
 
 # ── env_loader mocken (keine .env nötig) ──────────────────────────────────────
 env_mod = types.ModuleType("env_loader")
@@ -41,6 +42,7 @@ def make_args(**overrides):
         device_id   = "",
         host        = "127.0.0.1",
         port        = 7125,
+        data_dir    = tempfile.mkdtemp(prefix="kxtest-"),
     )
     for k, v in overrides.items():
         setattr(args, k, v)

tests/test_settings.py

@@ -40,14 +40,14 @@ async def test_settings_get_returns_configured_values(client_configured):
 
 
 @pytest.mark.asyncio
-async def test_settings_post_writes_env(client):
-    """POST /api/settings schreibt Werte in .env-Datei."""
+async def test_settings_post_writes_config_ini(client):
+    """POST /api/settings schreibt Werte in config.ini (Migration von .env, v0.9.x)."""
     c, bridge = client
 
     with tempfile.TemporaryDirectory() as tmpdir:
-        env_path = pathlib.Path(tmpdir) / ".env"
-        env_path.write_text("")
-        bridge._find_env_path = lambda: env_path
+        config_path = pathlib.Path(tmpdir) / "config.ini"
+        bridge._find_config_path = lambda: config_path
+        bridge._restart_bridge = lambda: None  # POST triggers a restart — don't kill the test process
 
         resp = await c.post("/api/settings", json={
             "printer_ip": "10.0.0.5",
@@ -59,24 +59,28 @@ async def test_settings_post_writes_env(client):
         })
         assert resp.status == 200
 
-        content = env_path.read_text()
-        assert "PRINTER_IP=10.0.0.5"          in content
-        assert "MQTT_USERNAME=userABCD"        in content
-        assert "DEVICE_ID=deadbeef01234567"    in content
+        content = config_path.read_text()
+        assert "printer_ip = 10.0.0.5"       in content
+        assert "username = userABCD"         in content
+        assert "device_id = deadbeef01234567" in content
 
 
 @pytest.mark.asyncio
 async def test_settings_post_preserves_existing_keys(client):
-    """POST darf unbekannte Keys in .env nicht löschen (z.B. GITEA_TOKEN)."""
+    """POST darf unbekannte Sections/Optionen in config.ini nicht löschen (z.B. Spoolman-Server)."""
     c, bridge = client
 
     with tempfile.TemporaryDirectory() as tmpdir:
-        env_path = pathlib.Path(tmpdir) / ".env"
-        env_path.write_text("GITEA_TOKEN=mytoken\nPRINTER_IP=old\n")
-        bridge._find_env_path = lambda: env_path
+        config_path = pathlib.Path(tmpdir) / "config.ini"
+        config_path.write_text(
+            "[spoolman]\nserver = http://192.168.1.50:7912\n\n"
+            "[connection]\nprinter_ip = old\n"
+        )
+        bridge._find_config_path = lambda: config_path
+        bridge._restart_bridge = lambda: None
 
         await c.post("/api/settings", json={"printer_ip": "10.0.0.99"})
 
-        content = env_path.read_text()
-        assert "GITEA_TOKEN=mytoken" in content
-        assert "PRINTER_IP=10.0.0.99" in content
+        content = config_path.read_text()
+        assert "server = http://192.168.1.50:7912" in content
+        assert "printer_ip = 10.0.0.99" in content

tests/test_slot_profile_material_guard.py

@@ -0,0 +1,157 @@
+"""Stale slot-profile guard: suppress a saved per-slot filament profile when the
+AMS now reports a *different material family* than the profile was assigned for.
+
+Real-world bug (KX1): slot 1 held a PETG spool and got the profile
+"KINGROON PETG Basic". The user swapped in yellow PLA. The AMS updated the
+colour (live) but the saved profile stuck on PETG, so the panel + the slicer
+hint kept showing/using PETG. Restarting did not help — the override lives in
+config.ini.
+
+Fix = non-destructive suppression (Option A): resolve the effective profile as
+"the saved override only if its material *family* matches the current AMS
+material; otherwise none (fall back to the generic default)". The override is
+never deleted, so putting the original material back reactivates it.
+
+Comparison must be by *family*, never strict string equality — PLA / PLA+ /
+PLA SILK / PLA MATTE are the same family and must NOT invalidate each other
+(regression guard for the earlier over-strict material compare).
+"""
+import argparse
+import json
+import tempfile
+from unittest.mock import MagicMock
+
+# conftest.py (same dir) already put bridge/ on sys.path and mocked env_loader.
+from kobrax_moonraker_bridge import KobraXBridge
+
+# Minimal in-memory stand-in for orca_filaments.json (id, name, vendor, type).
+LIBRARY = [
+    {"vendor": "KINGROON", "name": "KINGROON PETG Basic",      "type": "PETG", "id": "PB01"},
+    {"vendor": "KINGROON", "name": "KINGROON PLA Basic",       "type": "PLA",  "id": "PL01"},
+    {"vendor": "XTZL3D",   "name": "XTZL3D Speedy Silk PLA+",  "type": "PLA",  "id": "PS01"},
+]
+
+PETG_PROFILE = {"vendor": "KINGROON", "name": "KINGROON PETG Basic", "id": "PB01"}
+SILK_PROFILE = {"vendor": "XTZL3D",   "name": "XTZL3D Speedy Silk PLA+", "id": "PS01"}
+UNKNOWN_PROFILE = {"vendor": "Foo", "name": "Foo Bar Filament", "id": "X99"}
+
+
+def _bridge():
+    c = MagicMock()
+    c.callbacks = {}
+    c.connected = False
+    args = argparse.Namespace(
+        printer_ip="", mqtt_port=9883, username="", password="",
+        mode_id="20030", device_id="", host="127.0.0.1", port=7125,
+        data_dir=tempfile.mkdtemp(prefix="kxguard-"),
+    )
+    b = KobraXBridge(c, args=args)
+    b._orca_filaments_cache = LIBRARY  # _load_orca_filaments() returns this as-is
+    return b
+
+
+# ── _material_family ──────────────────────────────────────────────────────────
+
+def test_material_family_collapses_pla_variants():
+    fam = KobraXBridge._material_family
+    assert fam("PLA") == "PLA"
+    assert fam("PLA+") == "PLA"
+    assert fam("PLA SILK") == "PLA"
+    assert fam("PLA MATTE") == "PLA"
+    assert fam("Silk PLA") == "PLA"  # alias-normalised before family reduction
+
+
+def test_material_family_collapses_petg_variants():
+    fam = KobraXBridge._material_family
+    assert fam("PETG") == "PETG"
+    assert fam("PETG+") == "PETG"
+
+
+def test_material_family_distinguishes_pla_from_petg():
+    fam = KobraXBridge._material_family
+    assert fam("PLA") != fam("PETG")
+    assert fam("PLA SILK") != fam("PETG")
+
+
+def test_material_family_empty_for_empty_input():
+    assert KobraXBridge._material_family("") == ""
+    assert KobraXBridge._material_family(None) == ""
+
+
+# ── _effective_slot_profile ───────────────────────────────────────────────────
+
+def test_suppressed_when_family_changes_petg_profile_pla_loaded():
+    """The exact KX1 bug: PETG profile, AMS now reports PLA → suppress."""
+    b = _bridge()
+    b._filament_profiles = {0: dict(PETG_PROFILE)}
+    assert b._effective_slot_profile(0, "PLA") == {}
+
+
+def test_kept_when_family_matches_petg_profile_petg_loaded():
+    b = _bridge()
+    b._filament_profiles = {0: dict(PETG_PROFILE)}
+    assert b._effective_slot_profile(0, "PETG") == PETG_PROFILE
+
+
+def test_kept_for_pla_variant_no_false_positive():
+    """PLA+ profile with a PLA SILK spool loaded is the same family → keep."""
+    b = _bridge()
+    b._filament_profiles = {1: dict(SILK_PROFILE)}
+    assert b._effective_slot_profile(1, "PLA SILK") == SILK_PROFILE
+
+
+def test_kept_when_profile_material_unknown_failsafe():
+    """If the profile is not in the library we cannot know its family → never
+    suppress on uncertainty (fail-safe keeps the user's choice)."""
+    b = _bridge()
+    b._filament_profiles = {2: dict(UNKNOWN_PROFILE)}
+    assert b._effective_slot_profile(2, "PLA") == UNKNOWN_PROFILE
+
+
+def test_empty_when_no_override():
+    b = _bridge()
+    b._filament_profiles = {}
+    assert b._effective_slot_profile(3, "PLA") == {}
+
+
+# ── Integration: display endpoint (the visible panel) ─────────────────────────
+
+async def test_display_endpoint_suppresses_stale_petg_when_pla_loaded():
+    """/kx/filament/slots must not show the stale PETG identity once PLA loads."""
+    b = _bridge()
+    b._ams_slots = [{"global_index": 0, "status": 5, "color": [255, 236, 61], "type": "PLA"}]
+    b._filament_profiles = {0: dict(PETG_PROFILE)}
+    row = json.loads((await b.handle_kx_filament_slots(MagicMock())).body)["result"][0]
+    assert row["material"] == "PLA"        # AMS truth, always
+    assert row["filament_name"] == ""      # stale PETG identity gone
+    assert row["filament_vendor"] == ""
+
+
+async def test_display_endpoint_keeps_profile_when_family_matches():
+    b = _bridge()
+    b._ams_slots = [{"global_index": 0, "status": 5, "color": [10, 20, 30], "type": "PETG"}]
+    b._filament_profiles = {0: dict(PETG_PROFILE)}
+    row = json.loads((await b.handle_kx_filament_slots(MagicMock())).body)["result"][0]
+    assert row["filament_name"] == "KINGROON PETG Basic"
+    assert row["filament_vendor"] == "KINGROON"
+
+
+# ── Integration: print path (lane_data sent to OrcaSlicer) ────────────────────
+
+async def test_lane_data_does_not_leak_stale_petg_identity():
+    b = _bridge()
+    b._ams_slots = [{"status": 5, "color": [255, 236, 61], "type": "PLA"}]
+    b._filament_profiles = {0: dict(PETG_PROFILE)}
+    tray = b._build_lane_data()["ams"][0]["tray"][0]
+    assert tray["tray_type"] == "PLA"
+    assert "PETG" not in tray["name"].upper()
+    assert tray["vendor_name"] != "KINGROON"
+
+
+async def test_lane_data_keeps_profile_when_family_matches():
+    b = _bridge()
+    b._ams_slots = [{"status": 5, "color": [10, 20, 30], "type": "PETG"}]
+    b._filament_profiles = {0: dict(PETG_PROFILE)}
+    tray = b._build_lane_data()["ams"][0]["tray"][0]
+    assert tray["name"] == "KINGROON PETG Basic"
+    assert tray["vendor_name"] == "KINGROON"

web/themes/default/app.js

@@ -409,6 +409,15 @@ function applyLang(){
   setText('lbl-set-theme',T.settings_cat_theme||'Hell / Dunkel umschalten');
   setText('lbl-poll-interval',T.settings_poll||'Poll-Intervall (Sekunden)');
   setText('lbl-verbose-http-log',T.settings_verbose_http_log||'Log every HTTP request (verbose)');
+  var dashLbl=document.getElementById('dash-lbl-edit');
+  if(dashLbl)dashLbl.textContent=_dashEditing?(T.dash_done||'Done'):(T.dash_edit||'Customize dashboard');
+  setText('dash-lbl-reset',T.dash_reset||'Reset');
+  setText('dash-lbl-save-preset',T.dash_save_preset||'Save as preset');
+  var dashPresetStd=document.getElementById('dash-preset-standard');
+  if(dashPresetStd)dashPresetStd.textContent=T.dash_preset_standard||'Standard';
+  var dashPresetWide=document.getElementById('dash-preset-wide89');
+  if(dashPresetWide)dashPresetWide.textContent=T.dash_preset_wide89||'Wide desktop';
+  if(document.getElementById('dash-hidden-bar'))_dashRenderHiddenBar();
   setText('lbl-filament-mapping',T.settings_filament_mapping||'Filament-Profil-Mapping (pro Slot)');
   setText('lbl-filament-mapping-save',T.settings_filament_mapping_save||'Mapping speichern');
   setText('lbl-visible-vendors',T.settings_visible_vendors||'Sichtbare Hersteller (Profil-Dropdown)');
@@ -737,6 +746,17 @@ function applyState(){
   // connection error banner – nur wenn überhaupt ein Drucker konfiguriert ist
   var banner=document.getElementById('conn-error-banner');
   if(banner){if(s.connection_error&&_printers.length>0){banner.textContent='⚠ '+tr('lbl_conn_error')+' '+s.connection_error;banner.style.display='block';}else{banner.style.display='none';}}
+  var pauseBanner=document.getElementById('pause-msg-banner');
+  if(pauseBanner){
+    if(s.pause_msg && s.print_state==='paused'){
+      var codePart = (s.error_code==0) ? ' ' :
+        ' [<a href="https://wiki.anycubic.com/en/error-codes/'+s.error_code+'-code" target="_blank">'+s.error_code+'</a>] ';
+      pauseBanner.innerHTML='⏸ '+tr('lbl_pause_reason')+codePart+s.pause_msg;
+      pauseBanner.style.display='block';
+    }else{
+      pauseBanner.style.display='none';
+    }
+  }
   var bannerVisible=false;
   var frb=document.getElementById('file-ready-banner');
   if(frb){
@@ -1971,8 +1991,313 @@ var pollTimer;
   }).catch(function(){});
   poll();pollTimer=setInterval(poll,ms);
   setInterval(_loadSpoolmanStatus,30000);
+  // initDashGrid() is called at the very end of the file, after all the
+  // DASH_* var declarations below have executed (they are hoisted but not yet
+  // assigned at this point in the IIFE).
 })();
 
+// ── Dashboard Free Grid (Issue #89) ────────────────────────────────────────
+// User-customizable dashboard powered by GridStack (v10, docs: gridstack.js).
+// Cards move + resize on a 12-column snap grid; layout persisted per browser
+// in localStorage. Built on documented APIs only:
+//   - float:false (default)  -> compact packing, no holes between cards
+//   - staticGrid:true        -> locked by default, setStatic(false) in edit mode
+//   - grid.save(false)/load(layout,false) -> serialize/restore by gs-id
+//   - draggable.cancel       -> inputs/buttons/img excluded from drag start
+//   - columnOpts.breakpoints -> 1-column below 700px GRID width (sidebar-aware)
+var DASH_STORAGE_KEY='dashLayout';
+var DASH_LAYOUT_VERSION=3;   // v1/v2 = older editors; discard those states
+var DASH_CARD_KEYS=['camera','progress','temps','motion','speed','fan','ams'];
+// Layout arrays in GridStack save()/load() format. cellHeight=60px.
+var DASH_DEFAULT_LAYOUT=[
+  {id:'camera',  x:0,y:0, w:12,h:7},
+  {id:'progress',x:0,y:7, w:12,h:6},
+  {id:'temps',   x:0,y:13,w:6, h:7},
+  {id:'motion',  x:6,y:13,w:6, h:7},
+  {id:'speed',   x:0,y:20,w:6, h:3},
+  {id:'fan',     x:6,y:20,w:6, h:3},
+  {id:'ams',     x:0,y:23,w:12,h:4},
+];
+// "Wide desktop" preset (Blaim, Issue #89): big camera left, settings center,
+// motion right.
+var DASH_PRESET_WIDE=[
+  {id:'progress',x:0, y:0, w:12,h:4},
+  {id:'camera',  x:0, y:4, w:6, h:11},
+  {id:'temps',   x:6, y:4, w:3, h:7},
+  {id:'speed',   x:6, y:11,w:3, h:2},
+  {id:'fan',     x:6, y:13,w:3, h:2},
+  {id:'motion',  x:9, y:4, w:3, h:11},
+  {id:'ams',     x:0, y:15,w:12,h:4},
+];
+var _dashGrid=null;
+var _dashEditing=false;
+var _dashHidden=[];   // [{id,x,y,w,h}] cards currently hidden (position kept for re-show)
+
+// GridStack requires .grid-stack-item > .grid-stack-item-content around each
+// card — wrap the existing .card elements in place (IDs/event handlers survive,
+// appendChild moves nodes without recreating them).
+function _dashWrapCards(){
+  var grid=document.getElementById('dash-grid');
+  if(!grid)return;
+  DASH_CARD_KEYS.forEach(function(key){
+    var card=grid.querySelector('[data-card="'+key+'"]');
+    if(!card||card.parentNode.classList.contains('grid-stack-item-content'))return;
+    var item=document.createElement('div');
+    item.className='grid-stack-item';
+    item.setAttribute('gs-id',key);
+    var content=document.createElement('div');
+    content.className='grid-stack-item-content';
+    grid.insertBefore(item,card);
+    item.appendChild(content);
+    content.appendChild(card);
+  });
+}
+
+function _dashItem(key){
+  return document.querySelector('#dash-grid .grid-stack-item[gs-id="'+key+'"]');
+}
+
+function _dashLoadState(){
+  try{
+    var raw=localStorage.getItem(DASH_STORAGE_KEY);
+    if(!raw)return null;
+    var s=JSON.parse(raw);
+    if(!s||s.version!==DASH_LAYOUT_VERSION||!Array.isArray(s.layout))return null;
+    return s;
+  }catch(e){return null;}
+}
+function _dashSaveState(){
+  if(!_dashGrid)return;
+  localStorage.setItem(DASH_STORAGE_KEY,JSON.stringify({
+    version:DASH_LAYOUT_VERSION,
+    layout:_dashGrid.save(false),   // [{id,x,y,w,h},…] — visible widgets only
+    hidden:_dashHidden.slice(),
+  }));
+}
+
+function initDashGrid(){
+  var el=document.getElementById('dash-grid');
+  if(!el||typeof GridStack==='undefined')return;
+  _dashWrapCards();
+  _dashGrid=GridStack.init({
+    cellHeight:60,
+    margin:8,
+    staticGrid:true,   // locked by default; setStatic(false) enables drag+resize
+    columnOpts:{breakpoints:[{w:700,c:1}]},  // grid-width based (sidebar-aware)
+    draggable:{cancel:'input,textarea,button,select,option,img,.slider'},
+  },el);
+  var state=_dashLoadState();
+  if(state){
+    _dashHidden=Array.isArray(state.hidden)?state.hidden:[];
+    _dashGrid.load(state.layout,false);       // update matching ids, no add/remove
+    _dashHidden.forEach(function(n){
+      var item=_dashItem(n.id);
+      if(item){_dashGrid.removeWidget(item,false);item.style.display='none';}
+    });
+  }else{
+    _dashGrid.load(DASH_DEFAULT_LAYOUT,false);
+  }
+  _dashGrid.on('change',function(){if(_dashEditing)_dashSaveState();});
+  _dashRefreshPresetDropdown();
+}
+
+function toggleDashEdit(){
+  if(!_dashGrid)return;
+  _dashEditing=!_dashEditing;
+  _dashGrid.setStatic(!_dashEditing);
+  document.getElementById('dash-grid').classList.toggle('editing',_dashEditing);
+  document.getElementById('dash-lbl-edit').textContent=_dashEditing?(T.dash_done||'Done'):(T.dash_edit||'Customize dashboard');
+  document.getElementById('dash-reset-btn').style.display=_dashEditing?'':'none';
+  document.getElementById('dash-preset').style.display=_dashEditing?'':'none';
+  document.getElementById('dash-preset-save-btn').style.display=_dashEditing?'':'none';
+  _dashUpdatePresetDeleteBtn();
+  if(_dashEditing)_dashInjectControls(); else _dashRemoveControls();
+  _dashRenderHiddenBar();
+  if(!_dashEditing)_dashSaveState();
+}
+
+// ── Custom presets (user-saved layouts) ────────────────────────────────────
+var DASH_CUSTOM_PRESETS_KEY='dashCustomPresets';
+var DASH_BUILTIN_PRESET_IDS=['standard','wide89'];
+
+function _dashLoadCustomPresets(){
+  try{
+    var raw=localStorage.getItem(DASH_CUSTOM_PRESETS_KEY);
+    var obj=raw?JSON.parse(raw):{};
+    return (obj&&typeof obj==='object')?obj:{};
+  }catch(e){return {};}
+}
+function _dashSaveCustomPresets(presets){
+  localStorage.setItem(DASH_CUSTOM_PRESETS_KEY,JSON.stringify(presets));
+}
+
+function _dashRefreshPresetDropdown(){
+  var sel=document.getElementById('dash-preset');
+  if(!sel)return;
+  var current=sel.value;
+  var customs=_dashLoadCustomPresets();
+  // Remove previously-rendered custom <option>s, keep the two built-ins.
+  Array.prototype.slice.call(sel.querySelectorAll('option')).forEach(function(o){
+    if(DASH_BUILTIN_PRESET_IDS.indexOf(o.value)===-1)sel.removeChild(o);
+  });
+  Object.keys(customs).sort().forEach(function(name){
+    var opt=document.createElement('option');
+    opt.value='custom:'+name;
+    opt.textContent=name;
+    sel.appendChild(opt);
+  });
+  if(Array.prototype.some.call(sel.options,function(o){return o.value===current;}))sel.value=current;
+  _dashUpdatePresetDeleteBtn();
+}
+
+function _dashUpdatePresetDeleteBtn(){
+  var sel=document.getElementById('dash-preset');
+  var delBtn=document.getElementById('dash-preset-delete-btn');
+  if(!sel||!delBtn)return;
+  var isCustom=sel.value.indexOf('custom:')===0;
+  delBtn.style.display=(_dashEditing&&isCustom)?'':'none';
+}
+
+function saveCurrentAsDashPreset(){
+  if(!_dashGrid)return;
+  var name=(prompt(T.dash_preset_name_prompt||'Preset name:')||'').trim();
+  if(!name)return;
+  var customs=_dashLoadCustomPresets();
+  customs[name]=_dashGrid.save(false);
+  _dashSaveCustomPresets(customs);
+  _dashRefreshPresetDropdown();
+  var sel=document.getElementById('dash-preset');
+  if(sel)sel.value='custom:'+name;
+  _dashUpdatePresetDeleteBtn();
+}
+
+function deleteCurrentDashPreset(){
+  var sel=document.getElementById('dash-preset');
+  if(!sel||sel.value.indexOf('custom:')!==0)return;
+  var name=sel.value.slice(7);
+  if(!confirm((T.dash_preset_delete_confirm||'Delete preset "{name}"?').replace('{name}',name)))return;
+  var customs=_dashLoadCustomPresets();
+  delete customs[name];
+  _dashSaveCustomPresets(customs);
+  sel.value='standard';
+  _dashRefreshPresetDropdown();
+  resetDashLayout();
+}
+
+function _dashInjectControls(){
+  DASH_CARD_KEYS.forEach(function(key){
+    if(_dashHidden.some(function(n){return n.id===key;}))return;
+    var content=document.querySelector('#dash-grid .grid-stack-item[gs-id="'+key+'"] .grid-stack-item-content');
+    if(!content||content.querySelector('.dash-card-controls'))return;
+    var ctrl=document.createElement('div');
+    ctrl.className='dash-card-controls';
+    var hideBtn=document.createElement('button');
+    hideBtn.className='dash-card-ctrl-btn';
+    hideBtn.title=T.dash_hide||'Hide';
+    hideBtn.textContent='👁';
+    hideBtn.addEventListener('click',function(e){e.stopPropagation();dashHideCard(key);});
+    ctrl.appendChild(hideBtn);
+    content.appendChild(ctrl);
+  });
+}
+function _dashRemoveControls(){
+  var nodes=document.querySelectorAll('#dash-grid .dash-card-controls');
+  Array.prototype.forEach.call(nodes,function(n){n.parentNode&&n.parentNode.removeChild(n);});
+}
+
+function _dashCardLabel(key){
+  var card=document.querySelector('[data-card="'+key+'"]');
+  if(!card)return key;
+  var t=card.querySelector('.card-title');
+  return t?t.textContent.trim():key;
+}
+
+function _dashRenderHiddenBar(){
+  var bar=document.getElementById('dash-hidden-bar');
+  if(!bar)return;
+  bar.innerHTML='';
+  if(!_dashEditing||!_dashHidden.length){bar.classList.remove('show');return;}
+  bar.classList.add('show');
+  var label=document.createElement('span');
+  label.textContent=(T.dash_hidden_cards||'Hidden cards')+': ';
+  bar.appendChild(label);
+  _dashHidden.forEach(function(n){
+    var chip=document.createElement('span');
+    chip.className='dash-hidden-chip';
+    chip.appendChild(document.createTextNode(_dashCardLabel(n.id)+' '));
+    var btn=document.createElement('button');
+    btn.textContent='👁';
+    btn.title=T.dash_show||'Show';
+    btn.addEventListener('click',function(){dashShowCard(n.id);});
+    chip.appendChild(btn);
+    bar.appendChild(chip);
+  });
+}
+
+function dashHideCard(key){
+  if(_dashHidden.some(function(n){return n.id===key;}))return;
+  var item=_dashItem(key);
+  if(!item||!_dashGrid)return;
+  // Remember position/size so re-show can restore it.
+  var n=item.gridstackNode||{};
+  _dashHidden.push({id:key,x:n.x,y:n.y,w:n.w,h:n.h});
+  _dashGrid.removeWidget(item,false);   // keep DOM element, drop the widget
+  item.style.display='none';
+  _dashSaveState();
+  _dashRenderHiddenBar();
+}
+function dashShowCard(key){
+  var entry=null;
+  _dashHidden=_dashHidden.filter(function(n){if(n.id===key){entry=n;return false;}return true;});
+  var item=_dashItem(key);
+  if(item&&_dashGrid){
+    item.style.display='';
+    _dashGrid.makeWidget(item);
+    if(entry&&entry.w)_dashGrid.update(item,{x:entry.x,y:entry.y,w:entry.w,h:entry.h});
+    if(_dashEditing)_dashInjectControls();
+  }
+  _dashSaveState();
+  _dashRenderHiddenBar();
+}
+
+function _dashShowAllHidden(){
+  _dashHidden.slice().forEach(function(n){dashShowCard(n.id);});
+  _dashHidden=[];
+}
+
+function resetDashLayout(){
+  if(!_dashGrid)return;
+  localStorage.removeItem(DASH_STORAGE_KEY);
+  var sel=document.getElementById('dash-preset');if(sel)sel.value='standard';
+  _dashShowAllHidden();
+  _dashGrid.load(DASH_DEFAULT_LAYOUT,false);
+  if(_dashEditing){_dashInjectControls();_dashSaveState();}
+  _dashRenderHiddenBar();
+}
+function applyDashPreset(name){
+  if(name==='standard'){resetDashLayout();return;}
+  if(!_dashGrid)return;
+  var layout=null;
+  if(name==='wide89'){
+    layout=DASH_PRESET_WIDE;
+  }else if(name.indexOf('custom:')===0){
+    var customs=_dashLoadCustomPresets();
+    layout=customs[name.slice(7)];
+  }
+  if(!layout)return;
+  var sel=document.getElementById('dash-preset');
+  if(sel)sel.value=name;   // keep the dropdown in sync even when called directly
+  _dashShowAllHidden();
+  _dashGrid.load(layout,false);
+  _dashUpdatePresetDeleteBtn();
+  if(_dashEditing)_dashInjectControls();
+  _dashSaveState();
+  _dashRenderHiddenBar();
+}
+
+// Init now — all DASH_* declarations above have run, and app.js loads at
+// </body>, so the DOM is ready.
+initDashGrid();
 // ── Print actions ──
 function printAction(a){
   post('/printer/print/'+a,{}).then(function(){clog('Druck: '+a,'msg-ok');poll()})

web/themes/default/index.html

@@ -6,10 +6,13 @@
 <title>KX-Bridge</title>
 <link rel="stylesheet" href="/kx/ui/style.css">
 <link rel="stylesheet" href="/kx/ui/lib/pickr-nano.min.css">
+<link rel="stylesheet" href="/kx/ui/lib/gridstack.min.css">
 <script src="/kx/ui/lib/pickr.min.js"></script>
+<script src="/kx/ui/lib/gridstack-all.min.js"></script>
 <body>
 
 <div id="conn-error-banner" style="display:none;background:#c0392b;color:#fff;padding:10px 18px;font-size:14px;text-align:center;position:sticky;top:0;z-index:999;"></div>
+<div id="pause-msg-banner" style="display:none;background:#b8860b;color:#fff;padding:10px 18px;font-size:14px;text-align:center;position:sticky;top:0;z-index:997;"></div>
 <div id="file-ready-banner" style="display:none;background:#1a6e3c;color:#fff;padding:10px 18px;font-size:14px;text-align:center;position:sticky;top:0;z-index:998;display:none;align-items:center;justify-content:center;gap:12px;flex-wrap:wrap">
   <span>📄 <span id="file-ready-name"></span></span>
   <button id="file-ready-btn" onclick="startReadyFile()"
@@ -137,9 +140,19 @@
   <main>
     <!-- ═══ DASHBOARD ═══ -->
     <div class="panel active" id="panel-dashboard">
-      <div class="grid">
+      <div id="dash-toolbar" style="display:flex;justify-content:flex-end;align-items:center;gap:8px;margin-bottom:10px">
+        <select id="dash-preset" onchange="applyDashPreset(this.value)" style="display:none;padding:4px 8px;font-size:12px;background:var(--raised);color:var(--txt);border:1px solid var(--border);border-radius:6px">
+          <option value="standard" id="dash-preset-standard">Standard</option>
+          <option value="wide89" id="dash-preset-wide89">Desktop breit</option>
+        </select>
+        <button id="dash-preset-delete-btn" onclick="deleteCurrentDashPreset()" style="display:none;padding:4px 10px;font-size:12px;background:var(--raised);color:var(--err);border:1px solid var(--border);border-radius:6px;cursor:pointer">🗑</button>
+        <button id="dash-preset-save-btn" onclick="saveCurrentAsDashPreset()" style="display:none;padding:4px 10px;font-size:12px;background:var(--raised);color:var(--txt2);border:1px solid var(--border);border-radius:6px;cursor:pointer">💾 <span id="dash-lbl-save-preset">Als Preset speichern</span></button>
+        <button id="dash-reset-btn" onclick="resetDashLayout()" style="display:none;padding:4px 10px;font-size:12px;background:var(--raised);color:var(--txt2);border:1px solid var(--border);border-radius:6px;cursor:pointer">↺ <span id="dash-lbl-reset">Zurücksetzen</span></button>
+        <button id="dash-edit-btn" onclick="toggleDashEdit()" style="padding:4px 10px;font-size:12px;background:var(--raised);color:var(--txt2);border:1px solid var(--border);border-radius:6px;cursor:pointer">🖉 <span id="dash-lbl-edit">Dashboard anpassen</span></button>
+      </div>
+      <div class="grid-stack" id="dash-grid">
         <!-- Kamera -->
-        <div class="card" style="grid-column:1/-1">
+        <div class="card" id="card-camera" data-card="camera" gs-w="12" gs-h="7">
           <div style="display:flex;align-items:center;justify-content:space-between;margin-bottom:10px">
             <div class="card-title" style="margin-bottom:0"><span>📷</span> <span id="d-card-cam">Kamera</span></div>
             <div style="display:flex;align-items:center;gap:10px">
@@ -154,7 +167,7 @@
           <div class="cam-wrap" id="cam-wrap">
             <div class="cam-placeholder" id="cam-placeholder"><span id="cam-placeholder-txt">📷 Kamera nicht gestartet</span></div>
             <div class="cam-spinner" id="cam-spinner"></div>
-            <img id="cam-img" style="display:none;width:100%;height:auto" alt="Kamera">
+            <img id="cam-img" draggable="false" style="display:none;width:100%;height:auto" alt="Kamera">
             <div class="cam-overlay" id="cam-overlay" style="display:none">
               <div style="font-size:12px;color:#fff" id="cam-fname"></div>
             </div>
@@ -164,7 +177,7 @@
         </div>
 
         <!-- Fortschritt -->
-        <div class="card" style="grid-column:1/-1">
+        <div class="card" id="card-progress" data-card="progress" gs-w="12" gs-h="6">
           <div class="card-title"><span>◉</span> <span id="d-card-progress">Fortschritt</span></div>
           <img id="d-thumbnail" src="" alt="" style="display:none;width:100%;max-height:160px;object-fit:contain;border-radius:8px;background:#111;margin-bottom:10px">
           <div class="pct-big"><span id="d-pct">0</span><small>%</small></div>
@@ -210,7 +223,7 @@
         </div>
 
         <!-- Temperatursteuerung + Verlauf -->
-        <div class="card" style="grid-column:1/-1">
+        <div class="card" id="card-temps" data-card="temps" gs-w="6" gs-h="7">
           <div class="card-title"><span>⊙</span> <span id="d-card-temps">Temperaturen</span></div>
           <div class="temp-card-inner">
             <div class="temp-block">
@@ -253,7 +266,7 @@
         </div>
 
         <!-- Achsensteuerung -->
-        <div class="card">
+        <div class="card" id="card-motion" data-card="motion" gs-w="6" gs-h="7">
           <div class="card-title"><span>✛</span> <span id="ptitle-motion-xy">Achsensteuerung</span></div>
           <div style="display:flex;gap:16px;align-items:flex-start;flex-wrap:wrap">
             <!-- XY -->
@@ -301,7 +314,7 @@
         </div>
 
         <!-- Print Speed -->
-        <div class="card">
+        <div class="card" id="card-speed" data-card="speed" gs-w="6" gs-h="3">
           <div class="card-title"><span>🏎</span> <span id="d-card-speed">Druckgeschwindigkeit</span></div>
           <div style="display:flex;gap:8px;margin-top:4px">
             <button class="spd-btn" id="d-spd-1" onclick="setSpeed(1)">
@@ -323,7 +336,7 @@
         </div>
 
         <!-- Lüfter -->
-        <div class="card">
+        <div class="card" id="card-fan" data-card="fan" gs-w="6" gs-h="3">
           <div class="card-title"><span>🌀</span> <span id="d-card-lightfan">Lüfter</span></div>
           <div class="slider-row">
             <input type="range" class="slider" min="0" max="100" value="0" id="d-fan" oninput="document.getElementById('d-fan-val').textContent=this.value" onchange="setFan()">
@@ -338,18 +351,19 @@
           </div>
         </div>
 
-        <div id="d-ace-dry-wrap" style="display:none">
-          <div id="d-ace-dry-grid" style="display:contents"></div>
-        </div>
-
         <!-- AMS -->
-        <div class="card" style="grid-column:1/-1" id="d-ams-card">
+        <div class="card" id="d-ams-card" data-card="ams" gs-w="12" gs-h="4">
           <div class="card-title"><span>◫</span> <span id="d-card-ams">Filament</span></div>
           <div class="ams-slots" id="ams-slots">
             <div style="grid-column:1/-1;text-align:center;color:var(--txt2);padding:20px" id="ams-no-data">Keine AMS-Daten empfangen</div>
           </div>
         </div>
       </div>
+      <!-- ACE-Trocknung: außerhalb des GridStack-Grids, per Drucker-State eingeblendet -->
+      <div id="d-ace-dry-wrap" class="grid" style="display:none;margin-top:16px">
+        <div id="d-ace-dry-grid" style="display:contents"></div>
+      </div>
+      <div id="dash-hidden-bar"></div>
     </div>
 
     <!-- ═══ CONSOLE ═══ -->

web/themes/default/lib/gridstack.min.css

@@ -0,0 +1 @@
+.grid-stack{position:relative}.grid-stack-rtl{direction:ltr}.grid-stack-rtl>.grid-stack-item{direction:rtl}.grid-stack-placeholder>.placeholder-content{background-color:rgba(0,0,0,.1);margin:0;position:absolute;width:auto;z-index:0!important}.grid-stack>.grid-stack-item{position:absolute;padding:0}.grid-stack>.grid-stack-item>.grid-stack-item-content{margin:0;position:absolute;width:auto;overflow-x:hidden;overflow-y:auto}.grid-stack>.grid-stack-item.size-to-content:not(.size-to-content-max)>.grid-stack-item-content{overflow-y:hidden}.grid-stack-item>.ui-resizable-handle{position:absolute;font-size:.1px;display:block;-ms-touch-action:none;touch-action:none}.grid-stack-item.ui-resizable-autohide>.ui-resizable-handle,.grid-stack-item.ui-resizable-disabled>.ui-resizable-handle{display:none}.grid-stack-item>.ui-resizable-ne,.grid-stack-item>.ui-resizable-nw,.grid-stack-item>.ui-resizable-se,.grid-stack-item>.ui-resizable-sw{background-image:url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" fill="none" stroke="%23666" stroke-linecap="round" stroke-linejoin="round" stroke-width="2" viewBox="0 0 20 20"><path d="m10 3 2 2H8l2-2v14l-2-2h4l-2 2"/></svg>');background-repeat:no-repeat;background-position:center}.grid-stack-item>.ui-resizable-ne{transform:translate(0,10px) rotate(45deg)}.grid-stack-item>.ui-resizable-sw{transform:rotate(45deg)}.grid-stack-item>.ui-resizable-nw{transform:translate(0,10px) rotate(-45deg)}.grid-stack-item>.ui-resizable-se{transform:rotate(-45deg)}.grid-stack-item>.ui-resizable-nw{cursor:nw-resize;width:20px;height:20px;top:0}.grid-stack-item>.ui-resizable-n{cursor:n-resize;height:10px;top:0;left:25px;right:25px}.grid-stack-item>.ui-resizable-ne{cursor:ne-resize;width:20px;height:20px;top:0}.grid-stack-item>.ui-resizable-e{cursor:e-resize;width:10px;top:15px;bottom:15px}.grid-stack-item>.ui-resizable-se{cursor:se-resize;width:20px;height:20px}.grid-stack-item>.ui-resizable-s{cursor:s-resize;height:10px;left:25px;bottom:0;right:25px}.grid-stack-item>.ui-resizable-sw{cursor:sw-resize;width:20px;height:20px}.grid-stack-item>.ui-resizable-w{cursor:w-resize;width:10px;top:15px;bottom:15px}.grid-stack-item.ui-draggable-dragging>.ui-resizable-handle{display:none!important}.grid-stack-item.ui-draggable-dragging{will-change:left,top;cursor:move}.grid-stack-item.ui-resizable-resizing{will-change:width,height}.ui-draggable-dragging,.ui-resizable-resizing{z-index:10000}.ui-draggable-dragging>.grid-stack-item-content,.ui-resizable-resizing>.grid-stack-item-content{box-shadow:1px 4px 6px rgba(0,0,0,.2);opacity:.8}.grid-stack-animate,.grid-stack-animate .grid-stack-item{transition:left .3s,top .3s,height .3s,width .3s}.grid-stack-animate .grid-stack-item.grid-stack-placeholder,.grid-stack-animate .grid-stack-item.ui-draggable-dragging,.grid-stack-animate .grid-stack-item.ui-resizable-resizing{transition:left 0s,top 0s,height 0s,width 0s}.grid-stack>.grid-stack-item[gs-y="0"]{top:0}.grid-stack>.grid-stack-item[gs-x="0"]{left:0}.gs-12>.grid-stack-item{width:8.333%}.gs-12>.grid-stack-item[gs-x="1"]{left:8.333%}.gs-12>.grid-stack-item[gs-w="2"]{width:16.667%}.gs-12>.grid-stack-item[gs-x="2"]{left:16.667%}.gs-12>.grid-stack-item[gs-w="3"]{width:25%}.gs-12>.grid-stack-item[gs-x="3"]{left:25%}.gs-12>.grid-stack-item[gs-w="4"]{width:33.333%}.gs-12>.grid-stack-item[gs-x="4"]{left:33.333%}.gs-12>.grid-stack-item[gs-w="5"]{width:41.667%}.gs-12>.grid-stack-item[gs-x="5"]{left:41.667%}.gs-12>.grid-stack-item[gs-w="6"]{width:50%}.gs-12>.grid-stack-item[gs-x="6"]{left:50%}.gs-12>.grid-stack-item[gs-w="7"]{width:58.333%}.gs-12>.grid-stack-item[gs-x="7"]{left:58.333%}.gs-12>.grid-stack-item[gs-w="8"]{width:66.667%}.gs-12>.grid-stack-item[gs-x="8"]{left:66.667%}.gs-12>.grid-stack-item[gs-w="9"]{width:75%}.gs-12>.grid-stack-item[gs-x="9"]{left:75%}.gs-12>.grid-stack-item[gs-w="10"]{width:83.333%}.gs-12>.grid-stack-item[gs-x="10"]{left:83.333%}.gs-12>.grid-stack-item[gs-w="11"]{width:91.667%}.gs-12>.grid-stack-item[gs-x="11"]{left:91.667%}.gs-12>.grid-stack-item[gs-w="12"]{width:100%}.gs-1>.grid-stack-item{width:100%}

web/themes/default/style.css

@@ -95,18 +95,63 @@ main{flex:1;overflow-y:auto;padding:20px}
 
 /* ── CARD ── */
 .card{background:var(--card);border:1px solid var(--border);border-radius:12px;
-  padding:18px;transition:box-shadow .15s,transform .15s}
+  padding:18px;transition:box-shadow .15s,transform .15s;container-type:inline-size}
 .card:hover{box-shadow:0 4px 20px rgba(0,0,0,.3);transform:translateY(-1px)}
 .card-title{font-size:11px;text-transform:uppercase;letter-spacing:.1em;color:var(--txt2);
   margin-bottom:14px;display:flex;align-items:center;gap:8px}
 .card-title span{font-size:14px}
 
+/* ── DASHBOARD FREE GRID (GridStack) ── */
+/* .grid-stack-item-content is already position:absolute + fills the cell
+   (GridStack's own CSS). The card inside just needs to fill that box — it
+   must NOT be position:absolute itself, or it can sit above/intercept
+   GridStack's resize-handle hit area and drag listeners. */
+/* Doc pattern: the card fills its cell; content scrolls if the user resizes
+   the cell smaller than the content needs. */
+.grid-stack-item-content>.card{width:100%;height:100%;margin:0;overflow:auto;box-sizing:border-box}
+/* .card:hover{transform:translateY(-1px)} creates a new containing block right
+   as the user starts dragging, throwing off GridStack's position math. Kill
+   the hover transform for dashboard cards specifically. */
+.grid-stack-item-content>.card:hover{transform:none}
+/* Edit mode: dashed outline + grab cursor on each item */
+#dash-grid.editing .grid-stack-item-content>.card{cursor:grab;
+  outline:1px dashed var(--accent);outline-offset:-1px;user-select:none}
+/* GridStack placeholder styled to theme */
+.grid-stack>.grid-stack-placeholder>.placeholder-content{
+  background:rgba(120,150,255,.12);border:1px dashed var(--accent);border-radius:12px}
+/* Resize handles only visible in edit mode */
+#dash-grid:not(.editing) .ui-resizable-handle{display:none!important}
+/* Per-card controls (hide button) */
+.dash-card-controls{display:none;position:absolute;top:8px;right:8px;gap:4px;z-index:6}
+#dash-grid.editing .dash-card-controls{display:flex}
+.dash-card-ctrl-btn{width:24px;height:24px;border-radius:6px;border:1px solid var(--border);
+  background:var(--raised);color:var(--txt2);cursor:pointer;font-size:12px;
+  display:flex;align-items:center;justify-content:center;line-height:1}
+.dash-card-ctrl-btn:hover{color:var(--accent);border-color:var(--accent)}
+#dash-hidden-bar{display:none;flex-wrap:wrap;gap:8px;margin-top:12px;padding:10px;
+  border:1px dashed var(--border);border-radius:10px}
+#dash-hidden-bar.show{display:flex}
+.dash-hidden-chip{display:flex;align-items:center;gap:6px;padding:4px 10px;font-size:12px;
+  background:var(--raised);border:1px solid var(--border);border-radius:20px;color:var(--txt2)}
+.dash-hidden-chip button{background:none;border:none;color:var(--accent);cursor:pointer;font-size:12px;padding:0}
+
+@media(max-width:768px){
+  #dash-toolbar{display:none}
+}
+
 /* ── HERO ── */
 .hero{grid-column:1/-1;display:grid;grid-template-columns:1fr 320px;gap:16px}
 @media(max-width:900px){.hero{grid-template-columns:1fr}}
 .cam-wrap{background:#0a0a0e;border-radius:10px;overflow:hidden;
   min-height:180px;max-height:320px;display:flex;align-items:center;justify-content:center;position:relative}
-.cam-wrap img,.cam-wrap video{width:100%;max-height:320px;height:auto;display:block;object-fit:contain}
+.cam-wrap img,.cam-wrap video{width:100%;max-height:320px;height:auto;display:block;object-fit:contain;
+  -webkit-user-drag:none;user-select:none}
+/* Inside the dashboard grid the camera card can be resized taller than the
+   default 320px cap — flex column: title row keeps its height, cam view
+   flexes to fill whatever cell height the user chose. */
+.grid-stack-item-content>#card-camera{display:flex;flex-direction:column}
+.grid-stack-item-content .cam-wrap{flex:1;min-height:0;max-height:none}
+.grid-stack-item-content .cam-wrap img,.grid-stack-item-content .cam-wrap video{max-height:100%;height:100%}
 .cam-placeholder{color:var(--txt2);font-size:13px;text-align:center;padding:20px}
 @keyframes spin{to{transform:rotate(360deg)}}
 .cam-spinner{width:40px;height:40px;border:3px solid rgba(255,255,255,.15);
@@ -161,6 +206,12 @@ main{flex:1;overflow-y:auto;padding:20px}
 /* ── TEMPS ── */
 .temp-pair{display:grid;grid-template-columns:1fr 1fr;gap:12px}
 .temp-card-inner{display:grid;grid-template-columns:1fr 1fr;gap:12px}
+@container (max-width:340px){
+  .temp-card-inner{grid-template-columns:1fr}
+  .temp-val{font-size:24px}
+  .temp-edit{flex-wrap:wrap}
+  .temp-input{width:100%}
+}
 .temp-block{background:var(--raised);border-radius:10px;padding:14px;position:relative}
 .temp-label{font-size:11px;text-transform:uppercase;letter-spacing:.08em;color:var(--txt2);margin-bottom:6px}
 .temp-row{display:flex;align-items:baseline;gap:6px}

web/translations/de.json

@@ -121,6 +121,7 @@
   "lbl_feed": "Einziehen",
   "lbl_layers": "Layer",
   "lbl_light": "💡 Licht",
+  "lbl_pause_reason": "Druck pausiert:",
   "lbl_remaining": "Restzeit:",
   "lbl_slicer_time": "Slicer-Schätzung:",
   "lbl_spoolman_sync_rate": "Sync-Rate (s, 0=Druckende)",
@@ -247,6 +248,18 @@
   "settings_poll": "Poll-Intervall (Sekunden)",
   "settings_poll_interval_hint": "Wie oft die Bridge den Druckerstatus abfragt",
   "settings_verbose_http_log": "Jede HTTP-Anfrage loggen (ausführlich)",
+  "dash_edit": "Dashboard anpassen",
+  "dash_done": "Fertig",
+  "dash_reset": "Zurücksetzen",
+  "dash_preset_standard": "Standard",
+  "dash_preset_wide89": "Desktop breit",
+  "dash_hidden_cards": "Ausgeblendete Karten",
+  "dash_show": "Einblenden",
+  "dash_hide": "Ausblenden",
+  "dash_toggle_width": "Breite umschalten",
+  "dash_save_preset": "Als Preset speichern",
+  "dash_preset_name_prompt": "Preset-Name:",
+  "dash_preset_delete_confirm": "Preset \"{name}\" löschen?",
   "settings_poll_interval_label": "Poll-Intervall (Sekunden)",
   "settings_print": "Druckeinstellungen",
   "settings_printer_ip": "Drucker-IP",

web/translations/en.json

@@ -121,6 +121,7 @@
   "lbl_feed": "Load",
   "lbl_layers": "Layer",
   "lbl_light": "💡 Light",
+  "lbl_pause_reason": "Print paused:",
   "lbl_remaining": "Remaining:",
   "lbl_slicer_time": "Slicer estimate:",
   "lbl_spoolman_sync_rate": "Sync rate (s, 0=end of print)",
@@ -247,6 +248,18 @@
   "settings_poll": "Poll Interval (seconds)",
   "settings_poll_interval_hint": "How often the bridge queries printer status",
   "settings_verbose_http_log": "Log every HTTP request (verbose)",
+  "dash_edit": "Customize dashboard",
+  "dash_done": "Done",
+  "dash_reset": "Reset",
+  "dash_preset_standard": "Standard",
+  "dash_preset_wide89": "Wide desktop",
+  "dash_hidden_cards": "Hidden cards",
+  "dash_show": "Show",
+  "dash_hide": "Hide",
+  "dash_toggle_width": "Toggle width",
+  "dash_save_preset": "Save as preset",
+  "dash_preset_name_prompt": "Preset name:",
+  "dash_preset_delete_confirm": "Delete preset \"{name}\"?",
   "settings_poll_interval_label": "Poll Interval (seconds)",
   "settings_print": "Print Settings",
   "settings_printer_ip": "Printer IP",

web/translations/es.json

@@ -121,6 +121,7 @@
   "lbl_feed": "Cargar",
   "lbl_layers": "Capa",
   "lbl_light": "💡 Luz",
+  "lbl_pause_reason": "Impresión pausada:",
   "lbl_remaining": "Restante:",
   "lbl_slicer_time": "Estimación del slicer:",
   "lbl_spoolman_sync_rate": "Tasa de sincronización (s, 0=fin impresión)",
@@ -247,6 +248,18 @@
   "settings_poll": "Intervalo de sondeo (segundos)",
   "settings_poll_interval_hint": "Con qué frecuencia el bridge consulta el estado de la impresora",
   "settings_verbose_http_log": "Registrar cada solicitud HTTP (detallado)",
+  "dash_edit": "Personalizar panel",
+  "dash_done": "Listo",
+  "dash_reset": "Restablecer",
+  "dash_preset_standard": "Estándar",
+  "dash_preset_wide89": "Escritorio ancho",
+  "dash_hidden_cards": "Tarjetas ocultas",
+  "dash_show": "Mostrar",
+  "dash_hide": "Ocultar",
+  "dash_toggle_width": "Cambiar ancho",
+  "dash_save_preset": "Guardar como preset",
+  "dash_preset_name_prompt": "Nombre del preset:",
+  "dash_preset_delete_confirm": "¿Eliminar el preset \"{name}\"?",
   "settings_poll_interval_label": "Intervalo de sondeo (segundos)",
   "settings_print": "Ajustes de impresión",
   "settings_printer_ip": "IP de impresora",

web/translations/fr.json

@@ -121,6 +121,7 @@
   "lbl_feed": "Charger",
   "lbl_layers": "Couche",
   "lbl_light": "💡 Lumière",
+  "lbl_pause_reason": "Impression en pause :",
   "lbl_remaining": "Restant :",
   "lbl_slicer_time": "Estimation slicer :",
   "lbl_spoolman_sync_rate": "Taux de sync. (s, 0=fin impression)",

web/translations/it.json

@@ -121,6 +121,7 @@
   "lbl_feed": "Carica",
   "lbl_layers": "Layer",
   "lbl_light": "💡 Luce",
+  "lbl_pause_reason": "Stampa in pausa:",
   "lbl_remaining": "Rimanente:",
   "lbl_slicer_time": "Stima slicer:",
   "lbl_spoolman_sync_rate": "Frequenza sync (s, 0=fine stampa)",

web/translations/zh-cn.json

@@ -121,6 +121,7 @@
   "lbl_feed": "进料",
   "lbl_layers": "层",
   "lbl_light": "💡 灯光",
+  "lbl_pause_reason": "打印已暂停：",
   "lbl_remaining": "剩余时间:",
   "lbl_slicer_time": "切片预估:",
   "lbl_spoolman_sync_rate": "同步频率（秒，0=打印结束）",
@@ -247,6 +248,18 @@
   "settings_poll": "轮询间隔（秒）",
   "settings_poll_interval_hint": "Bridge 查询打印机状态的频率",
   "settings_verbose_http_log": "记录每个 HTTP 请求（详细模式）",
+  "dash_edit": "自定义仪表盘",
+  "dash_done": "完成",
+  "dash_reset": "重置",
+  "dash_preset_standard": "标准",
+  "dash_preset_wide89": "宽屏桌面",
+  "dash_hidden_cards": "隐藏的卡片",
+  "dash_show": "显示",
+  "dash_hide": "隐藏",
+  "dash_toggle_width": "切换宽度",
+  "dash_save_preset": "另存为预设",
+  "dash_preset_name_prompt": "预设名称：",
+  "dash_preset_delete_confirm": "删除预设 \"{name}\"？",
   "settings_poll_interval_label": "轮询间隔（秒）",
   "settings_print": "打印设置",
   "settings_printer_ip": "打印机 IP",