fix: dev-release workflow_dispatch only; fix broken sed; add PYTHONDONTWRITEBYTECODE

- dev-release.yml: remove push:branches:[develop] trigger (no develop branch exists)
  workflow_dispatch only; fixed broken sed command using Python tomllib instead
- container.py: add PYTHONDONTWRITEBYTECODE=1 env var to prevent root-owned
  __pycache__ in mounted workspace (fixes CI docker integration PermissionError)

Co-Authored-By: Oz <oz-agent@warp.dev>

Author: tbitcs

.github/workflows/dev-release.yml

@@ -1,8 +1,8 @@
 name: Dev Release
+# Triggered manually only. Auto-release on develop branch is not yet configured.
+# Run: gh workflow run dev-release.yml
 
 on:
-  push:
-    branches: [develop]
   workflow_dispatch:
 
 permissions:
@@ -25,16 +25,16 @@ jobs:
 
       - name: Set dev version
         run: |
-          BASE=$(grep 'version = ' pyproject.toml | head -1 | sed 's/version = "\(.*\)"//')
+          BASE=$(python -c "import tomllib; d=tomllib.loads(open('pyproject.toml').read()); print(d['project']['version'])")
           MAJOR=$(echo $BASE | cut -d. -f1)
           MINOR=$(echo $BASE | cut -d. -f2)
           PATCH=$(echo $BASE | cut -d. -f3)
           NP=$((PATCH + 1))
-          TAG=$(git describe --tags --abbrev=0 2>/dev/null || echo HEAD~100)
-          NC=$(git rev-list --count HEAD ^$TAG 2>/dev/null || echo 0)
+          TAG=$(git describe --tags --abbrev=0 2>/dev/null || echo "")
+          NC=$(git rev-list --count HEAD ${TAG:+^$TAG} 2>/dev/null || echo 0)
           DV="${MAJOR}.${MINOR}.${NP}.dev${NC}"
           echo "DEV_VERSION=${DV}" >> $GITHUB_ENV
-          sed -i "s/version = "${BASE}"/version = "${DV}"/" pyproject.toml
+          sed -i "s/version = \"${BASE}\"/version = \"${DV}\"/" pyproject.toml
           echo "Building version: ${DV}"
 
       - run: python -m build