rename: mCables → CableGUI (project + repo + image + paths)

Full project rename per m's call. Single atomic commit because the
codebase rename is a coupled change — go module path, env vars, DB
default, Docker artefact names, and on-disk mDock paths all flip
together.

- go.mod: module mgit.msbls.de/m/mcables → mgit.msbls.de/m/cablegui
- cmd/mcables → cmd/cablegui (git mv)
- All Go imports rewritten to the new module path
- Env vars: MCABLES_ADDR/MCABLES_DB → CABLEGUI_ADDR/CABLEGUI_DB
- DB default path: data/mcables.db → data/cablegui.db
- Dockerfile + docker-compose.yml: image, container_name, env vars,
  bind-mount /home/m/stacks/mcables → /home/m/stacks/cablegui,
  secrets /home/m/secrets/mcables → /home/m/secrets/cablegui
- Makefile: bin target + run/build commands point at cmd/cablegui
- .gitignore + .dockerignore: /mcables → /cablegui
- README, docs/design.md, CLAUDE.md: prose + paths + image name
- web/static/index.html: <title> + brand
- web/static/main.js + web/web.go: header comment
- internal/exporter: Scene.Source "mcables" → "cablegui"
- internal/server/export.go: error-detail secrets path
- internal/db/migrations/*.sql: header comments (mCables vN → CableGUI vN)

Memory group_id kept as "mcables" to preserve existing memory continuity.
Documented as historical in CLAUDE.md.

go build ./... clean; go test -race ./... green

.dockerignore

@@ -15,7 +15,7 @@ data
 
 # Build artefacts
 bin
-/mcables
+/cablegui
 
 # Editor cruft
 .vscode

.gitignore

@@ -8,7 +8,7 @@ data/*.db-shm
 
 # Build artefacts
 bin/
-/mcables
+/cablegui
 
 # Editor
 .vscode/

CLAUDE.md

@@ -1,11 +1,11 @@
-# mCables — Project Instructions
+# CableGUI — Project Instructions
 
 ## Project Overview
 
 Cable-management **framework + solver** for m's setup. m declares his
 **devices** and the **connection requirements** between them ("NAS must
-connect to Switch via RJ45"). mCables runs a solver that emits the cable
+connect to Switch via RJ45"). CableGUI runs a solver that emits the cable
-plan + bundle recommendations. mCables is a **schematic**, not a
+plan + bundle recommendations. CableGUI is a **schematic**, not a
 physical-routing tool — cables are straight lines between endpoints; the
 "maximum bundling" objective is satisfied by the endpoint-pair rule
 (when two or more cables share the same A↔B endpoint pair, group them
@@ -13,16 +13,17 @@ into one bundle). The visual editor is still there for tweaking the
 plan, but the solver is the headline.
 
 Each cable-managed environment (LOFT, OFFICE, …) is a separate
-**mCables project**, and each project is backed by exactly one Excalidraw
+**CableGUI project**, and each project is backed by exactly one Excalidraw
 drawing. The framework provides a visual web interface backed by a Go
 HTTP API and SQLite, plus an export pipeline that writes `.excalidraw`
 files via mExDraw.
 
-**Memory group_id:** `mcables`
+**Memory group_id:** `mcables` (kept historical — all prior memories live
+under this id; renaming would orphan them)
 
 **No CLI.** Frontend-first — every interaction is through the visual
 interface. The backend serves the UI and the API; there is no
-`mcables` shell binary intended for humans.
+`cablegui` shell binary intended for humans.
 
 ## Goal
 
@@ -53,7 +54,7 @@ interface. The backend serves the UI and the API; there is no
 
 | Layer | Tech | Notes |
 |---|---|---|
-| DB | SQLite | `./data/mcables.db` (project-local, gitignored). Driver: `modernc.org/sqlite` (cgo-free). |
+| DB | SQLite | `./data/cablegui.db` (project-local, gitignored). Driver: `modernc.org/sqlite` (cgo-free). |
 | Backend | Go | `net/http` HTTP API + static frontend via `embed.FS`. Standard library + minimal deps. Single binary. |
 | Frontend | Vanilla JS modules + SVG, no build step | TypeScript types via JSDoc, optional `tsc --noEmit` in CI. Preact-via-CDN-ESM is the documented fallback if vanilla state gets painful — no build step either way. |
 | Diagram I/O | mExDraw HTTP API | `PUT https://mxdrw.msbls.de/api/drawings/<name>.excalidraw` with `Authorization: Bearer $MEXDRAW_TOKEN`. (The `mcp__mexdraw__*` MCP tools are not currently configured for this project — workers use the raw HTTP API.) |
@@ -112,14 +113,14 @@ interface. The backend serves the UI and the API; there is no
 
 ## Deployment — mDock, raw docker (NOT Dokploy)
 
-mCables runs on **mDock** (`192.168.178.131` on the LAN, Tailscale `mdock`)
+CableGUI runs on **mDock** (`192.168.178.131` on the LAN, Tailscale `mdock`)
 as a **plain docker-compose service**. Dokploy is for public mlake/mRiver
 stuff; mDock uses raw `docker compose` per the conventions of the existing
 mDock services (mgreen, mgeo, msports-garmin, paperless, …).
 
-- Repo layout on mDock: `/home/m/stacks/mcables/` with `docker-compose.yml`,
+- Repo layout on mDock: `/home/m/stacks/cablegui/` with `docker-compose.yml`,
-  `data/` bind-mount, secrets in `/home/m/secrets/mcables/.env`.
+  `data/` bind-mount, secrets in `/home/m/secrets/cablegui/.env`.
-- Image: `mgit.msbls.de/m/mcables:latest` (built and pushed by a Gitea
+- Image: `mgit.msbls.de/m/cablegui:latest` (built and pushed by a Gitea
   Actions workflow on push to `main`, runs on the self-hosted runner on
   mDock with label `self-hosted:host`).
 - Port mapping: `7777:7777`, exposed on the LAN — no reverse proxy.
@@ -127,12 +128,12 @@ mDock services (mgreen, mgeo, msports-garmin, paperless, …).
 - LAN URL: `http://mdock:7777`.
 - No auth — LAN-trusted.
 
-Local dev (no Docker): `go run ./cmd/mcables` against `./data/mcables.db`.
+Local dev (no Docker): `go run ./cmd/cablegui` against `./data/cablegui.db`.
 
 ## Seed drawing — visual grammar reference, **not** a runtime importer
 
 `mxdrw.msbls.de/draw/Cable-Management.excalidraw` is **reference material
-only**. mCables does **not** auto-ingest it. m will rebuild LOFT and OFFICE
+only**. CableGUI does **not** auto-ingest it. m will rebuild LOFT and OFFICE
 from scratch inside the tool — the seed exists so the **exporter** mimics
 its visual grammar:
 
@@ -163,13 +164,13 @@ Legend colours (global, seeded once by migration 001):
 
 ## Out of scope (v0)
 
-- Multi-user. mCables is m-only.
+- Multi-user. CableGUI is m-only.
 - Auth / sharing — LAN-trusted on mDock.
 - Mobile / responsive — desktop browser only.
 - Cable inventory beyond visual structure (no length, no purchase history,
   no SKU). Strictly visual structure for v0.
 - Import from `.excalidraw` at runtime. If a one-shot migration is ever
-  needed, a separate `mcables-migrate` CLI tool is the right shape, not a
+  needed, a separate `cablegui-migrate` CLI tool is the right shape, not a
   hot API endpoint.
 
 ## Worker Preferences

Dockerfile

@@ -1,6 +1,6 @@
 # syntax=docker/dockerfile:1.7
 #
-# mCables — single-stage build → distroless runtime image.
+# CableGUI — single-stage build → distroless runtime image.
 # go.mod requires go 1.25; modernc.org/sqlite is pure Go so CGO_ENABLED=0
 # and a distroless/static runtime is all we need.
 
@@ -17,20 +17,20 @@ COPY . .
 RUN CGO_ENABLED=0 GOOS=linux go build \
         -trimpath \
         -ldflags="-s -w" \
-        -o /out/mcables \
+        -o /out/cablegui \
-        ./cmd/mcables
+        ./cmd/cablegui
 
 FROM gcr.io/distroless/static-debian12:nonroot
 WORKDIR /app
-COPY --from=build /out/mcables /app/mcables
+COPY --from=build /out/cablegui /app/cablegui
 
-ENV MCABLES_ADDR=0.0.0.0:7777 \
+ENV CABLEGUI_ADDR=0.0.0.0:7777 \
-    MCABLES_DB=/app/data/mcables.db
+    CABLEGUI_DB=/app/data/cablegui.db
 
 EXPOSE 7777
 # Run as UID:GID 1000:1000 to match m on mDock — the bind-mounted
-# /home/m/stacks/mcables/data is owned by m:m, so the container can write
+# /home/m/stacks/cablegui/data is owned by m:m, so the container can write
 # to it without chowning the host dir. distroless/static-debian12 accepts
 # arbitrary numeric UIDs; the Go binary doesn't need a /etc/passwd entry.
 USER 1000:1000
-ENTRYPOINT ["/app/mcables"]
+ENTRYPOINT ["/app/cablegui"]

Makefile

@@ -1,14 +1,14 @@
 .PHONY: build run test typecheck fmt clean
 
-BIN := bin/mcables
+BIN := bin/cablegui
 PKG := ./...
 
 build:
 	@mkdir -p bin
-	go build -trimpath -ldflags="-s -w" -o $(BIN) ./cmd/mcables
+	go build -trimpath -ldflags="-s -w" -o $(BIN) ./cmd/cablegui
 
 run:
-	go run ./cmd/mcables
+	go run ./cmd/cablegui
 
 test:
 	go test -race $(PKG)

README.md

@@ -1,9 +1,9 @@
-# mCables
+# CableGUI
 
 Cable-management **framework** for m's setup — visual web editor backed by
 a single Go binary + SQLite, generating Excalidraw drawings via mExDraw.
 
-Each cable-managed environment (LOFT, OFFICE, …) is a separate mCables
+Each cable-managed environment (LOFT, OFFICE, …) is a separate CableGUI
 *project*; each project is backed by exactly one `.excalidraw` drawing on
 mxdrw.msbls.de.
 
@@ -23,7 +23,7 @@ end-to-end; the SVG canvas is intentionally empty until slice 2.
 ## Run it
 
 ```sh
-go run ./cmd/mcables
+go run ./cmd/cablegui
 # open http://localhost:7777
 ```
 
@@ -31,18 +31,18 @@ Or built:
 
 ```sh
 make build
-./bin/mcables
+./bin/cablegui
 ```
 
 The binary serves the frontend from an embedded `web/static/` and the
-JSON API under `/api/`. SQLite lives at `./data/mcables.db` by default.
+JSON API under `/api/`. SQLite lives at `./data/cablegui.db` by default.
 
 ### Environment
 
 | Var | Default | Notes |
 |---|---|---|
-| `MCABLES_ADDR` | `0.0.0.0:7777` | Listen address. |
+| `CABLEGUI_ADDR` | `0.0.0.0:7777` | Listen address. |
-| `MCABLES_DB` | `./data/mcables.db` | SQLite path. Parent dir is created on boot. |
+| `CABLEGUI_DB` | `./data/cablegui.db` | SQLite path. Parent dir is created on boot. |
 | `MEXDRAW_BASE_URL` | `https://mxdrw.msbls.de` | Base URL for mExDraw export. |
 | `MEXDRAW_USER` | (unset) | Username for the mxdrw HTTP Basic Auth on export. Required. |
 | `MEXDRAW_PASS` | (unset) | Password for the mxdrw HTTP Basic Auth on export. Required. |
@@ -78,37 +78,35 @@ DELETE /api/cable-types/:id               ← 409 in_use if any cable references
 
 ## Deploy to mDock
 
-mCables runs on **mDock** at `http://mdock:7777` as a docker-compose
+CableGUI runs on **mDock** at `http://mdock:7777` as a docker-compose
-service under `/home/m/stacks/mcables/`. Pattern matches the other
+service under `/home/m/stacks/cablegui/`. Pattern matches the other
 mDock services (mgreen-journal, mgeo, msports-garmin, …) — no Dokploy,
 no reverse proxy, LAN-trusted.
 
-### Manual deploy (first roll)
+### Manual deploy
 
-1. **Build + push the image** (from any host with docker; today the
+1. **Build + push the image** (image now lives under `m/` in Gitea):
-   image lives in mAi's Gitea namespace because mAi doesn't have write
-   access to `m/`):
 
    ```sh
-   docker build -t mgit.msbls.de/mai/mcables:latest .
+   docker build -t mgit.msbls.de/m/cablegui:latest .
-   awk '/machine mgit.msbls.de/{getline; getline; print $2}' ~/.netrc-mai \
+   awk '/machine mgit.msbls.de/{getline; getline; print $2}' ~/.netrc \
-     | docker login mgit.msbls.de -u mAi --password-stdin
+     | docker login mgit.msbls.de -u m --password-stdin
-   docker push mgit.msbls.de/mai/mcables:latest
+   docker push mgit.msbls.de/m/cablegui:latest
    ```
 
 2. **Prepare directories on mDock** (one-time):
 
    ```sh
-   ssh mdock 'mkdir -p /home/m/stacks/mcables/data /home/m/secrets/mcables \
+   ssh mdock 'mkdir -p /home/m/stacks/cablegui/data /home/m/secrets/cablegui \
-              && touch /home/m/secrets/mcables/.env \
+              && touch /home/m/secrets/cablegui/.env \
-              && chmod 0600 /home/m/secrets/mcables/.env'
+              && chmod 0600 /home/m/secrets/cablegui/.env'
-   scp docker-compose.yml mdock:/home/m/stacks/mcables/docker-compose.yml
+   scp docker-compose.yml mdock:/home/m/stacks/cablegui/docker-compose.yml
    ```
 
 3. **Pull + start**:
 
    ```sh
-   ssh mdock 'cd /home/m/stacks/mcables && docker compose pull && docker compose up -d'
+   ssh mdock 'cd /home/m/stacks/cablegui && docker compose pull && docker compose up -d'
    ```
 
 4. **Verify** from any LAN host:
@@ -119,11 +117,11 @@ no reverse proxy, LAN-trusted.
    ```
 
 To **update** to a new build: rebuild + push the image, then
-`ssh mdock 'cd /home/m/stacks/mcables && docker compose pull && docker compose up -d'`.
+`ssh mdock 'cd /home/m/stacks/cablegui && docker compose pull && docker compose up -d'`.
 
 ### Persistence
 
-SQLite lives at `/home/m/stacks/mcables/data/mcables.db` on the host
+SQLite lives at `/home/m/stacks/cablegui/data/cablegui.db` on the host
 (bind-mounted into the container at `/app/data`). Container runs as
 UID 1000:1000 to align with `m:m` ownership on mDock — DB files end
 up owned by `m`, the host user.

cmd/cablegui/main.go

@@ -11,14 +11,14 @@ import (
 	"syscall"
 	"time"
 
-	"mgit.msbls.de/m/mcables/internal/db"
+	"mgit.msbls.de/m/cablegui/internal/db"
-	"mgit.msbls.de/m/mcables/internal/server"
+	"mgit.msbls.de/m/cablegui/internal/server"
-	"mgit.msbls.de/m/mcables/web"
+	"mgit.msbls.de/m/cablegui/web"
 )
 
 func main() {
-	addr := envOr("MCABLES_ADDR", "0.0.0.0:7777")
+	addr := envOr("CABLEGUI_ADDR", "0.0.0.0:7777")
-	dbPath := envOr("MCABLES_DB", "./data/mcables.db")
+	dbPath := envOr("CABLEGUI_DB", "./data/cablegui.db")
 
 	if err := os.MkdirAll(filepath.Dir(dbPath), 0o755); err != nil {
 		log.Fatalf("mkdir data dir: %v", err)
@@ -41,7 +41,7 @@ func main() {
 	}
 
 	go func() {
-		log.Printf("mcables listening on %s (db=%s)", addr, dbPath)
+		log.Printf("cablegui listening on %s (db=%s)", addr, dbPath)
 		if err := srv.ListenAndServe(); err != nil && !errors.Is(err, http.ErrServerClosed) {
 			log.Fatalf("listen: %v", err)
 		}

docker-compose.yml

@@ -1,20 +1,20 @@
-# mCables — production compose for mDock.
+# CableGUI — production compose for mDock.
-# Lives at /home/m/stacks/mcables/docker-compose.yml on mDock.
+# Lives at /home/m/stacks/cablegui/docker-compose.yml on mDock.
 # Matches the existing mDock service patterns (mgreen, mgeo, …).
 
 services:
-  mcables:
+  cablegui:
-    image: mgit.msbls.de/m/mcables:latest
+    image: mgit.msbls.de/m/cablegui:latest
-    container_name: mcables
+    container_name: cablegui
     restart: unless-stopped
     ports:
       - "7777:7777"
     environment:
       - TZ=Europe/Berlin
-      - MCABLES_ADDR=0.0.0.0:7777
+      - CABLEGUI_ADDR=0.0.0.0:7777
-      - MCABLES_DB=/app/data/mcables.db
+      - CABLEGUI_DB=/app/data/cablegui.db
     env_file:
       # MEXDRAW_USER + MEXDRAW_PASS for the mxdrw HTTP Basic Auth on export.
-      - /home/m/secrets/mcables/.env
+      - /home/m/secrets/cablegui/.env
     volumes:
-      - /home/m/stacks/mcables/data:/app/data
+      - /home/m/stacks/cablegui/data:/app/data

docs/design.md

@@ -1,4 +1,4 @@
-# mCables — Design v4.1
+# CableGUI — Design v4.1
 
 Cable-management **framework + solver** for m's setup. Inventor shift 1
 design, revised through v2 (rescope to multi-project framework), v3
@@ -6,7 +6,7 @@ design, revised through v2 (rescope to multi-project framework), v3
 **v4.1 — six locked answers from m's v4 review**.
 
 > **What changed in v4.1** (tight pass on v4)
-> 1. **mCables is a schematic, not a physical-routing tool.** Cables are
+> 1. **CableGUI is a schematic, not a physical-routing tool.** Cables are
 >    straight lines between endpoints; the solver and the renderer do not
 >    care about paths, trunks, frame edges, or cable-tray polylines.
 >    "Maximum bundling" reduces to the v3 rule: **≥2 cables between the
@@ -33,13 +33,13 @@ design, revised through v2 (rescope to multi-project framework), v3
 
 Sources: the live `Cable-Management.excalidraw` on mxdrw.msbls.de (used as
 the *visual-grammar reference*, not a bootstrap import target),
-`mai-memory` (`mcables`, `m`), and the live mDock services for deploy
+`mai-memory` (`cablegui`, `m`), and the live mDock services for deploy
 conventions (§10). v4 driven by m's product-vision clarification:
 
 > "we provide a cable manager — I say what devices we have, the app tells
 > me how to bundle cables and how the most efficient connection looks like"
 
-mCables shifts from a manual draw-and-click editor to a **solver** that
+CableGUI shifts from a manual draw-and-click editor to a **solver** that
 takes a list of devices + the connections m needs and emits the cable
 plan + bundle recommendations. The manual editor stays (it's the only way
 to inspect + tweak the plan) but is no longer the primary surface.
@@ -60,7 +60,7 @@ to inspect + tweak the plan) but is no longer the primary surface.
 >   without applying; default applies.
 > - **Solver objective: maximum bundling** (§5b.1). Schematic only: when
 >   two or more cables share the same endpoint pair, group them into one
->   bundle. No path or trunk geometry — mCables is a wiring schematic,
+>   bundle. No path or trunk geometry — CableGUI is a wiring schematic,
 >   not a routing tool. v4.1 strips all path/trunk language from the v4
 >   draft.
 > - **UI: device-type dropdown** on device-create, **Connection
@@ -72,7 +72,7 @@ to inspect + tweak the plan) but is no longer the primary surface.
 >   bundle-rendering polish.
 >
 > **What carried over from v3 (unchanged in v4)**
-> - mCables is a framework: top-level `projects`, each backed by one
+> - CableGUI is a framework: top-level `projects`, each backed by one
 >   `.excalidraw` drawing. `UNIQUE(projects.name)`.
 > - `cable_types` is global. Migration 001 seeds Power/USB/HDMI/DP/RJ45.
 > - `devices` UNIQUE(project_id, name); `frame_id` nullable; FrameRef
@@ -81,8 +81,8 @@ to inspect + tweak the plan) but is no longer the primary surface.
 > - `projects.drawing_name` auto-defaults to `<name>.excalidraw`.
 > - `DELETE /api/projects/:pid?confirm=<name>` guardrail.
 > - No cable inventory metadata; visual + connectivity structure only.
-> - DB at `./data/mcables.db` (gitignored). Bind `0.0.0.0:7777` LAN, no auth.
+> - DB at `./data/cablegui.db` (gitignored). Bind `0.0.0.0:7777` LAN, no auth.
-> - Deploy on mDock under `/home/m/stacks/mcables/`, raw docker-compose.
+> - Deploy on mDock under `/home/m/stacks/cablegui/`, raw docker-compose.
 >
 > **What's superseded in v4**
 > - The "manual draw-a-cable port-to-port" flow from v3 §7 is *kept* as a
@@ -97,7 +97,7 @@ to inspect + tweak the plan) but is no longer the primary surface.
 
 `Cable-Management.excalidraw` on mxdrw.msbls.de is **not** ingested at
 runtime. It is the visual-grammar reference we lock the export onto so that
-when m rebuilds LOFT and OFFICE inside mCables, the exported `.excalidraw`
+when m rebuilds LOFT and OFFICE inside CableGUI, the exported `.excalidraw`
 looks like the seed.
 
 Concrete numbers from the live file (180 elements):
@@ -128,7 +128,7 @@ Three observations about the seed's visual grammar — these constrain the
 1. **Ports sit on a device edge as small ellipses (~12×9)**, coloured by
    cable type. They are not children of the device in the Excalidraw sense
    (no `containerId`/`boundElements` link) — purely positional. When we
-   export from mCables we mimic that: port ellipse at `(device.x +
+   export from CableGUI we mimic that: port ellipse at `(device.x +
    port.x_offset, device.y + port.y_offset)`, stroke colour = type colour.
 2. **Cable arrows bind to elements**. In the seed: 44 endpoints to ellipses
    (ports), 12 to whole rectangles (device-level, no specific port), 3 to
@@ -161,7 +161,7 @@ painful: switch to Preact-via-CDN-ESM (still no build step). Not v0.
 
 ## 2. SQLite schema
 
-`./data/mcables.db` (project-local, gitignored). WAL mode, FKs on.
+`./data/cablegui.db` (project-local, gitignored). WAL mode, FKs on.
 Driver: **`modernc.org/sqlite`** (cgo-free — clean cross-compile, simple
 Dockerfile).
 
@@ -609,8 +609,8 @@ cascade does **not** touch `cable_types` (no FK to projects).
 
 ## 3. Go HTTP API
 
-Single binary `cmd/mcables`, `net/http`, no router framework. Listens on
+Single binary `cmd/cablegui`, `net/http`, no router framework. Listens on
-`0.0.0.0:7777` by default (overridable via `MCABLES_ADDR`). Static frontend
+`0.0.0.0:7777` by default (overridable via `CABLEGUI_ADDR`). Static frontend
 from `embed.FS` at `/`, JSON API under `/api/`.
 
 ```
@@ -780,7 +780,7 @@ generated scene JSON.
 
 ## 4. Export — DB → Excalidraw (visual-grammar conformance)
 
-mCables generates a `.excalidraw` scene from a project's rows. The seed
+CableGUI generates a `.excalidraw` scene from a project's rows. The seed
 drawing's grammar is the contract.
 
 ### 4.1 Element mapping
@@ -798,7 +798,7 @@ drawing's grammar is the contract.
 
 ### 4.2 Element IDs are stable across exports
 
-Every mCables row carries `excalidraw_id` (TEXT, generated on first export
+Every CableGUI row carries `excalidraw_id` (TEXT, generated on first export
 via `crypto/rand` → 21-char Excalidraw-style ID). On re-export the same row
 reuses the same ID. This means:
 
@@ -866,7 +866,7 @@ left strictly alone — the solver only adds and removes its own.
 
 ### 5b.1 Objective: maximum bundling — schematic only
 
-mCables is a **schematic**, not a physical-routing tool. Cables are
+CableGUI is a **schematic**, not a physical-routing tool. Cables are
 straight lines between endpoints; the solver has no model of walls,
 floors, cable trays, or path geometry. "Maximum bundling" therefore
 reduces to a single rule on the schematic:
@@ -988,7 +988,7 @@ triggers a debounced re-solve) is parked at slice 9+ as an opt-in.
 
 ```
                 ┌─────────────────────┐
-                │ mCables DB (truth)  │
+                │ CableGUI DB (truth)  │
                 └──────────┬──────────┘
                            │
               export       ▼
@@ -998,11 +998,11 @@ triggers a debounced re-solve) is parked at slice 9+ as an opt-in.
                        └────────────────────────┘
 ```
 
-- mCables UI → DB: synchronous (every drag/add/remove persists immediately).
+- CableGUI UI → DB: synchronous (every drag/add/remove persists immediately).
 - DB → Excalidraw: **manual** button "Export to Excalidraw" in the header,
   per project. Calls `POST /api/projects/:pid/sync/export`.
 - Excalidraw → DB: **not implemented** in v0. Anything m draws in
-  Excalidraw stays in Excalidraw until he redraws it in mCables.
+  Excalidraw stays in Excalidraw until he redraws it in CableGUI.
 
 This keeps the v0 scope tight: no conflict resolution, no element-diff
 import, no auto-debounce. mExDraw keeps its own version history (git
@@ -1012,7 +1012,7 @@ When mxdrw is unreachable: the export button shows a tooltip and disables;
 the editor keeps working against the local DB.
 
 Post-MVP, import returns as a one-shot migration tool (separate
-`mcables-migrate` CLI tool, not part of the running server) for seeding
+`cablegui-migrate` CLI tool, not part of the running server) for seeding
 new projects from existing `.excalidraw` files.
 
 ---
@@ -1023,7 +1023,7 @@ The editor lives at `/`. Layout:
 
 ```
 ┌────────────────────────────────────────────────────────────────────┐
-│ mCables   [LOFT ▾ projects-picker]            [Export] [+ Project] │  ← header
+│ CableGUI   [LOFT ▾ projects-picker]            [Export] [+ Project] │  ← header
 ├────────┬───────────────────────────────────────────────────────────┤
 │        │                                                           │
 │ Legend │                                                           │
@@ -1254,7 +1254,7 @@ Slices 9+ (not promised for the first coder shift):
 - Cable inventory metadata (length/SKU) if m later wants it.
 - Dark mode.
 
-Out of scope, period (would change mCables's mental model): path
+Out of scope, period (would change CableGUI's mental model): path
 routing, cable-tray polylines, frame-edge corridors, wall-axis bundling,
 3D, anything that treats a cable as more than a labelled endpoint pair.
 
@@ -1264,7 +1264,7 @@ routing, cable-tray polylines, frame-edge corridors, wall-axis bundling,
 
 The six v4 questions are now answered. Locked answers:
 
-1. **Where do paths come from?** → **Nowhere — mCables is a schematic.**
+1. **Where do paths come from?** → **Nowhere — CableGUI is a schematic.**
    Cables are straight lines between endpoints. The solver does not
    route, the renderer does not route, and "maximum bundling" reduces to
    the endpoint-pair rule (§5b.1). Anything resembling a path, trunk,
@@ -1307,25 +1307,25 @@ before writing this:
 - Host port mappings: deliberately collision-free across the host. Existing
   high ports in use include 3300 (mgreen), 3077 (paperless-ai), 7878
   (radarr), 8082 (mgeo-tileserver), 8989 (sonarr), 9696 (prowlarr).
-  **Port 7777 is free** — taking it for mCables.
+  **Port 7777 is free** — taking it for CableGUI.
 - Bind-mount volumes: `/home/m/<project>-data:/app/data` is the canonical
   pattern (mgreen). For project-local data we put `data/` *next to* the
   compose file so a `git pull && docker compose up -d` is the whole deploy:
-  `/home/m/stacks/mcables/data:/app/data`.
+  `/home/m/stacks/cablegui/data:/app/data`.
 - Secrets via `env_file: /home/m/secrets/<project>/.env` (msports-garmin
-  pattern). mCables only needs `MEXDRAW_TOKEN` for export.
+  pattern). CableGUI only needs `MEXDRAW_TOKEN` for export.
 - No reverse proxy on mDock. Services expose ports directly on the LAN
   (mDock = `192.168.178.131` / Tailscale `mdock`). Public exposure goes via
-  mlake/Dokploy + Caddy when needed — out of scope for mCables (LAN-only).
+  mlake/Dokploy + Caddy when needed — out of scope for CableGUI (LAN-only).
 - Auto-deploy via the Gitea Actions self-hosted runner already installed
   on mDock (`/home/m/act-runner/`, label `self-hosted:host`). Push to
   `main` → workflow on mDock → `docker compose up --build -d`.
 
-### Repo layout for mCables
+### Repo layout for CableGUI
 
 ```
-mCables/
+CableGUI/
-├── cmd/mcables/main.go        # Go binary
+├── cmd/cablegui/main.go        # Go binary
 ├── internal/
 │   ├── db/                    # migrations + store
 │   ├── importer/              # post-MVP only (not in MVP)
@@ -1336,7 +1336,7 @@ mCables/
 │   ├── main.js                # ES module entry
 │   ├── style.css
 │   └── lib/...                # SVG helpers, store, components
-├── data/                      # mCables runtime DB lives here (gitignored)
+├── data/                      # CableGUI runtime DB lives here (gitignored)
 │   └── .gitkeep
 ├── docs/design.md             # this file
 ├── Dockerfile
@@ -1361,37 +1361,37 @@ COPY go.mod go.sum ./
 RUN go mod download
 COPY . .
 RUN CGO_ENABLED=0 GOOS=linux go build -trimpath -ldflags="-s -w" \
-        -o /out/mcables ./cmd/mcables
+        -o /out/cablegui ./cmd/cablegui
 
 FROM gcr.io/distroless/static-debian12:nonroot
 WORKDIR /app
-COPY --from=build /out/mcables /app/mcables
+COPY --from=build /out/cablegui /app/cablegui
-ENV MCABLES_ADDR=0.0.0.0:7777
+ENV CABLEGUI_ADDR=0.0.0.0:7777
-ENV MCABLES_DB=/app/data/mcables.db
+ENV CABLEGUI_DB=/app/data/cablegui.db
 USER nonroot:nonroot
 EXPOSE 7777
-ENTRYPOINT ["/app/mcables"]
+ENTRYPOINT ["/app/cablegui"]
 ```
 
-### docker-compose.yml (on mDock at `/home/m/stacks/mcables/`)
+### docker-compose.yml (on mDock at `/home/m/stacks/cablegui/`)
 
 ```yaml
 services:
-  mcables:
+  cablegui:
-    image: mgit.msbls.de/m/mcables:latest
+    image: mgit.msbls.de/m/cablegui:latest
-    container_name: mcables
+    container_name: cablegui
     restart: unless-stopped
     ports:
       - "7777:7777"
     environment:
       - TZ=Europe/Berlin
-      - MCABLES_ADDR=0.0.0.0:7777
+      - CABLEGUI_ADDR=0.0.0.0:7777
-      - MCABLES_DB=/app/data/mcables.db
+      - CABLEGUI_DB=/app/data/cablegui.db
       - MEXDRAW_BASE_URL=https://mxdrw.msbls.de
     env_file:
-      - /home/m/secrets/mcables/.env       # contains MEXDRAW_TOKEN
+      - /home/m/secrets/cablegui/.env       # contains MEXDRAW_TOKEN
     volumes:
-      - /home/m/stacks/mcables/data:/app/data
+      - /home/m/stacks/cablegui/data:/app/data
 ```
 
 LAN URL: `http://mdock:7777` (or `http://192.168.178.131:7777`).
@@ -1412,15 +1412,15 @@ jobs:
     steps:
       - uses: actions/checkout@v4
       - name: Build image
-        run: docker build -t mgit.msbls.de/m/mcables:latest .
+        run: docker build -t mgit.msbls.de/m/cablegui:latest .
       - name: Push image
         run: |
           echo "${{ secrets.GITEA_TOKEN }}" | \
             docker login mgit.msbls.de -u mAi --password-stdin
-          docker push mgit.msbls.de/m/mcables:latest
+          docker push mgit.msbls.de/m/cablegui:latest
       - name: Up
         run: |
-          cd /home/m/stacks/mcables
+          cd /home/m/stacks/cablegui
           docker compose pull
           docker compose up -d
 ```
@@ -1428,7 +1428,7 @@ jobs:
 ### Local-development run (no Docker)
 
 ```
-make run          # go run ./cmd/mcables → :7777 against ./data/mcables.db
+make run          # go run ./cmd/cablegui → :7777 against ./data/cablegui.db
 make typecheck    # tsc --noEmit on web/
 make test         # go test ./...
 ```

go.mod

@@ -1,4 +1,4 @@
-module mgit.msbls.de/m/mcables
+module mgit.msbls.de/m/cablegui
 
 go 1.25.5
 

internal/db/db.go

@@ -1,4 +1,4 @@
-// Package db owns SQLite access for mCables: migrations runner + the
+// Package db owns SQLite access for CableGUI: migrations runner + the
 // query layer (store.go). The Store wraps a *sql.DB with helpers; tests
 // and the HTTP layer take a *Store, never a raw *sql.DB.
 package db

internal/db/migrations/001_init.sql

@@ -1,4 +1,4 @@
--- mCables v3 initial schema. See docs/design.md §2.
+-- CableGUI v3 initial schema. See docs/design.md §2.
 
 -- A project IS a drawing. LOFT and OFFICE are separate projects.
 -- One project ↔ one .excalidraw file in mExDraw.

internal/db/migrations/002_device_catalog.sql

@@ -1,4 +1,4 @@
--- mCables v4 device-type catalog. See docs/design.md §2.1 + §2.2.
+-- CableGUI v4 device-type catalog. See docs/design.md §2.1 + §2.2.
 
 -- v4 — device-type catalog. Built-in types live globally (project_id NULL).
 -- Per-project custom types use project_id = X.

internal/db/migrations/003_connection_requirements.sql

@@ -1,4 +1,4 @@
--- mCables v4.1 connection requirements + solver-owned cable flag.
+-- CableGUI v4.1 connection requirements + solver-owned cable flag.
 -- See docs/design.md §2.1 + §2 connection_requirements + §5b.3.
 
 -- The solver's input: "device A must connect to device B via cable type T".

internal/db/migrations/004_setup_templates.sql

@@ -1,4 +1,4 @@
--- mCables v4.1 setup templates. See docs/design.md §2.4.
+-- CableGUI v4.1 setup templates. See docs/design.md §2.4.
 --
 -- A template is a named recipe of (device_types + requirements) that
 -- bootstraps a project from blank to solver-ready in one apply call.

internal/db/migrations/005_catalog_power.sql

@@ -1,4 +1,4 @@
--- mCables v5 — catalog: power-distribution devices.
+-- CableGUI v5 — catalog: power-distribution devices.
 -- Adds 5 built-in device_types (project_id NULL, built_in=1).
 --
 -- Multi-plug N exposes Power × (N+1) ports — one input + N outputs. The

internal/db/migrations/006_fix_power_hubs.sql

@@ -1,4 +1,4 @@
--- mCables v6 — fix IOx-* and Multi-plug-* + Wifi-plug port profiles.
+-- CableGUI v6 — fix IOx-* and Multi-plug-* + Wifi-plug port profiles.
 --
 -- v4 seeded the IOx-3 / IOx-6 / IOx-8 as USB hubs (Power × 1 + USB × N),
 -- but m's physical IOx-* devices are power strips (1 power input on

internal/db/migrations/007_clamps.sql

@@ -1,4 +1,4 @@
--- mCables v5 — cable routing via clamps. See docs/design.md §11.
+-- CableGUI v5 — cable routing via clamps. See docs/design.md §11.
 --
 -- A clamp is a physical anchor placed on the canvas. A cable's polyline
 -- runs from its `from` endpoint → its clamps in `ord` sequence → its

internal/exporter/exporter.go

@@ -13,7 +13,7 @@ import (
 	"math/big"
 	"sort"
 
-	"mgit.msbls.de/m/mcables/internal/db"
+	"mgit.msbls.de/m/cablegui/internal/db"
 )
 
 // Scene is the top-level Excalidraw file format. Keys mirror what the
@@ -537,7 +537,7 @@ func BuildScene(snap *db.Snapshot, nowMilli int64, genID func() string) (*Scene,
 	scene := &Scene{
 		Type:     "excalidraw",
 		Version:  2,
-		Source:   "mcables",
+		Source:   "cablegui",
 		Elements: els,
 		AppState: AppState{
 			GridSize:       nil,

internal/exporter/exporter_test.go

@@ -5,7 +5,7 @@ import (
 	"strings"
 	"testing"
 
-	"mgit.msbls.de/m/mcables/internal/db"
+	"mgit.msbls.de/m/cablegui/internal/db"
 )
 
 // deterministic id generator for tests

internal/server/cables.go

@@ -5,7 +5,7 @@ import (
 	"errors"
 	"net/http"
 
-	"mgit.msbls.de/m/mcables/internal/db"
+	"mgit.msbls.de/m/cablegui/internal/db"
 )
 
 type cableEndpointBody struct {

internal/server/clamps.go

@@ -5,7 +5,7 @@ import (
 	"errors"
 	"net/http"
 
-	"mgit.msbls.de/m/mcables/internal/db"
+	"mgit.msbls.de/m/cablegui/internal/db"
 )
 
 type clampCreate struct {

internal/server/connection_requirements.go

@@ -5,7 +5,7 @@ import (
 	"errors"
 	"net/http"
 
-	"mgit.msbls.de/m/mcables/internal/db"
+	"mgit.msbls.de/m/cablegui/internal/db"
 )
 
 type connReqCreate struct {

internal/server/device_types.go

@@ -5,7 +5,7 @@ import (
 	"errors"
 	"net/http"
 
-	"mgit.msbls.de/m/mcables/internal/db"
+	"mgit.msbls.de/m/cablegui/internal/db"
 )
 
 type deviceTypePortBody struct {

internal/server/export.go

@@ -12,8 +12,8 @@ import (
 	"strings"
 	"time"
 
-	"mgit.msbls.de/m/mcables/internal/db"
+	"mgit.msbls.de/m/cablegui/internal/db"
-	"mgit.msbls.de/m/mcables/internal/exporter"
+	"mgit.msbls.de/m/cablegui/internal/exporter"
 )
 
 // syncExport runs the project's snapshot through the exporter, persists
@@ -34,7 +34,7 @@ func (h *handlers) syncExport(w http.ResponseWriter, r *http.Request) {
 	if user == "" || pass == "" {
 		writeJSON(w, http.StatusBadRequest, errorBody{
 			Error:   "MEXDRAW_USER / MEXDRAW_PASS not set",
-			Details: "Add MEXDRAW_USER and MEXDRAW_PASS to /home/m/secrets/mcables/.env on mDock and restart the container — mxdrw expects HTTP Basic Auth",
+			Details: "Add MEXDRAW_USER and MEXDRAW_PASS to /home/m/secrets/cablegui/.env on mDock and restart the container — mxdrw expects HTTP Basic Auth",
 		})
 		return
 	}

internal/server/frames_devices.go

@@ -5,7 +5,7 @@ import (
 	"errors"
 	"net/http"
 
-	"mgit.msbls.de/m/mcables/internal/db"
+	"mgit.msbls.de/m/cablegui/internal/db"
 )
 
 // ---------------------------------------------------------------- frames

internal/server/handlers.go

@@ -6,7 +6,7 @@ import (
 	"net/http"
 	"strconv"
 
-	"mgit.msbls.de/m/mcables/internal/db"
+	"mgit.msbls.de/m/cablegui/internal/db"
 )
 
 type handlers struct {

internal/server/io_markers.go

@@ -5,7 +5,7 @@ import (
 	"errors"
 	"net/http"
 
-	"mgit.msbls.de/m/mcables/internal/db"
+	"mgit.msbls.de/m/cablegui/internal/db"
 )
 
 type ioMarkerCreate struct {

internal/server/ports.go

@@ -5,7 +5,7 @@ import (
 	"errors"
 	"net/http"
 
-	"mgit.msbls.de/m/mcables/internal/db"
+	"mgit.msbls.de/m/cablegui/internal/db"
 )
 
 type portCreate struct {

internal/server/server.go

@@ -7,10 +7,10 @@ import (
 	"io/fs"
 	"net/http"
 
-	"mgit.msbls.de/m/mcables/internal/db"
+	"mgit.msbls.de/m/cablegui/internal/db"
 )
 
-// New returns an http.Handler serving the mCables API at /api/ and the
+// New returns an http.Handler serving the CableGUI API at /api/ and the
 // embedded frontend at /. The frontend FS should be rooted such that
 // "index.html" is at its root.
 func New(store *db.Store, frontend fs.FS) http.Handler {

internal/server/solver.go

@@ -5,7 +5,7 @@ import (
 	"errors"
 	"net/http"
 
-	"mgit.msbls.de/m/mcables/internal/db"
+	"mgit.msbls.de/m/cablegui/internal/db"
 )
 
 func (h *handlers) solve(w http.ResponseWriter, r *http.Request) {

web/static/index.html

@@ -3,12 +3,12 @@
 <head>
   <meta charset="utf-8" />
   <meta name="viewport" content="width=device-width, initial-scale=1" />
-  <title>mCables</title>
+  <title>CableGUI</title>
   <link rel="stylesheet" href="/style.css" />
 </head>
 <body>
   <header class="topbar">
-    <span class="brand">mCables</span>
+    <span class="brand">CableGUI</span>
     <div class="project-picker">
       <label for="project-select" class="sr-only">Project</label>
       <select id="project-select" aria-label="Active project">

web/static/main.js

@@ -1,4 +1,4 @@
-// mCables frontend entry — vanilla ES module, no build step.
+// CableGUI frontend entry — vanilla ES module, no build step.
 //
 // Slice 2 adds: frame + device rendering, +Frm/+Dev tools, drag-to-position,
 // inline naming, inspector for selection. State stays minimal: one

web/web.go

@@ -1,5 +1,5 @@
 // Package web bundles the frontend (HTML/JS/CSS) into the Go binary
-// via embed.FS so deploying mCables means shipping one file.
+// via embed.FS so deploying CableGUI means shipping one file.
 package web
 
 import (