fix(container): add git safe.directory to setup.sh

Bind-mounted /workspaces may have a different uid than the container
user, causing Git to refuse all operations with "dubious ownership"
errors (CVE-2022-24765). Runs on every container start before any
setup stages.

Author: AnExiledDev

container/.devcontainer/CHANGELOG.md

@@ -2,6 +2,10 @@
 
 ## Unreleased
 
+### Security
+
+- **Git safe.directory configured on container start** — bind-mounted `/workspaces` may have a different uid than the container user, causing Git to refuse all operations with "dubious ownership" errors (CVE-2022-24765). `setup.sh` now runs `git config --global safe.directory` using `$WORKSPACE_ROOT` on every start.
+
 ### Hermes Agent
 
 - **New feature: `hermes-agent`** — installs [Nous Research's Hermes Agent](https://hermes-agent.nousresearch.com/) CLI via the upstream `curl | bash` installer with `--skip-setup`. Hermes uses the plain `anthropic` / `openai` Python SDKs directly and supports any compatible provider (Anthropic, OpenAI, MiniMax, local models). Enabled by default; set `"version": "none"` in `devcontainer.json` to disable.

container/.devcontainer/scripts/setup.sh

@@ -75,6 +75,11 @@ if ! sudo chown "$(id -un):$(id -gn)" "$HOME/.claude" 2>/dev/null; then
     echo "[setup] WARNING: Could not fix volume ownership on $HOME/.claude — subsequent scripts may fail"
 fi
 
+# Mark workspace as safe for Git — bind-mounted workspace may have
+# different uid than container user, causing "dubious ownership"
+# errors (CVE-2022-24765)
+git config --global safe.directory "${WORKSPACE_ROOT:-/workspaces}"
+
 SETUP_START=$(date +%s)
 SETUP_RESULTS=()