Fase 2: 04_sanitize.py - scrubbing de secretos de skills/agentes/plans (10 secretos unicos, gate en verde)

data/raw/sanitized/plans/tengo-un-problema-cuando-snazzy-kazoo.md

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+# Fix slow/failing `chown -R` in entrypoint.sh on Mac ARM bind mounts
+
+## Context
+
+On macOS (Apple Silicon), Docker Desktop bind-mounts host project folders (e.g.
+`/home/aleleba/projects/telus/telus-board-report`) into the container over a virtualized
+filesystem (virtiofs/gRPC-FUSE) that does not support changing file ownership from inside
+the container. `entrypoint.sh:79` runs:
+
+```bash
+sudo chown -R ${HOME_USER} /home/${HOME_USER}
+```
+
+This recurses into those bind-mounted directories too, including huge `node_modules`
+trees, and every single file inside them fails with `Operation not permitted`. Two real
+problems come from this, not just one:
+
+1. **Speed** — `chown -R` walks every file individually; over tens of thousands of
+   `node_modules`/`.venv` entries this is very slow.
+2. **Correctness (bigger issue found during investigation)** — the script starts with
+   `set -eu`. `chown -R` still returns a non-zero exit status once it finishes (even
+   though it keeps going and reports every failure), and this line is not guarded by
+   `|| true` or an `if`. Confirmed locally: a failing `chown` under `set -e` aborts the
+   script immediately at that line. That means once this line fails, **everything after
+   it in entrypoint.sh never runs** — no `.ssh` permission fixup, no custom-scripts, no
+   extension install, and critically the final `code tunnel ...` command that actually
+   starts the VS Code tunnel. So this isn't just "slow," it can silently prevent the
+   container from ever reaching the tunnel start step on a run where a permission error
+   occurs.
+
+The user has confirmed ownership doesn't actually need to change on these mounted
+folders — the Dockerfile already does `chmod -R a+rwX /home` at build time (`Dockerfile:41`),
+and the host-mounted files are already world-writable (777), so `aleleba` can read/write
+them regardless of `chown` succeeding.
+
+## Fix
+
+Edit `entrypoint.sh:79`, replacing the whole-home recursive `chown` with a `find -xdev`
+based version that:
+
+- **Stays on the container's own filesystem** (`-xdev`) so it never descends into
+  separately-mounted bind volumes like `/home/${HOME_USER}/projects/...` — this is what
+  fixes the slowness, without hardcoding folder names like `node_modules`/`.venv`
+  (it works generically for any bind-mounted subtree, not just those two).
+- **Never aborts the script** even if an unexpected chown failure occurs elsewhere, by
+  appending `|| true` (this is the correctness fix — restores the guarantee that the
+  rest of entrypoint.sh, including the VS Code tunnel startup, always runs).
+
+```bash
+sudo find "/home/${HOME_USER}" -xdev -exec chown "${HOME_USER}" {} + 2>/dev/null || true
+```
+
+This is a single-line change to `entrypoint.sh`; no other recursive chown/chmod calls in
+the script (lines 72, 132, 137, 142) are touched, since those aren't the ones hitting
+bind-mounted project directories.
+
+**This is not a Mac-only fix.** `-xdev` skips any directory that is a separate mount
+point (different device id) from `/home/${HOME_USER}` itself — that's true for bind
+mounts on Linux/Synology just as much as on macOS. The difference is only in symptom:
+- On **macOS** (virtiofs/gRPC-FUSE), `chown` on the bind-mounted files fails outright
+  (`Operation not permitted`), which — combined with the `set -e` bug above — can abort
+  the whole entrypoint before the tunnel starts.
+- On **Linux**, the same `chown -R` walk into `node_modules`/`.venv` succeeds file-by-file
+  (root can chown across a Linux bind mount), so there's no error output, but it still
+  pays the same per-file syscall cost — this is almost certainly why the user's other,
+  working Linux/Synology environment is *also* slow to start, just silently.
+
+Because the fix skips crossing the mount boundary rather than special-casing specific
+folder names or the host OS, one change fixes both the correctness bug (Mac) and the
+startup latency (all environments) with no behavior change for anything that lives on
+the container's own filesystem (`.ssh`, dotfiles, `.vscode*`, etc. are chowned exactly as
+before).
+
+## Verification
+
+1. Read the diff to confirm only line 79 changed and the semantics (still chowning to
+   `HOME_USER`, still running as root via `sudo`) are preserved.
+2. Locally simulate the `set -e` abort scenario (same repro used during investigation:
+   a `chown -R` hitting a permission-denied/missing path under `set -eu` kills the
+   script) and confirm the new `find -xdev ... || true` line does **not** abort a
+   `set -eu` script even when it encounters a permission error.
+3. Rebuild the image (`docker build .`) to confirm the Dockerfile/entrypoint still builds
+   cleanly.
+4. If possible, run the container with a bind-mounted `node_modules`-heavy directory
+   (mirroring the user's Mac setup) and confirm: no `Operation not permitted` spam, the
+   entrypoint completes quickly, and the `code tunnel` command still launches at the end
+   of the log.