refactor: declare render_diff.py dependencies inline (PEP 723)

`uv run <script>` now installs polib, beautifulsoup4, playwright and
pillow itself, so the --no-project/--with flags are no longer needed.

Co-Authored-By: Claude Opus 5.5 <[email protected]>
Claude-Session: https://claude.ai/code/session_014pJTfUKUkCc4HFprcvhxRe

Author: josix

.claude/skills/review-rendered-diff/SKILL.md

@@ -25,10 +25,11 @@ mode used, e.g. `[blocks: rewritten, 87% changed]`.
 From the repo root:
 
 ```bash
-uv run --no-project --with polib --with beautifulsoup4 --with playwright --with pillow \
-  python .claude/skills/review-rendered-diff/scripts/render_diff.py howto/logging.po --base origin/3.15
+uv run .claude/skills/review-rendered-diff/scripts/render_diff.py howto/logging.po --base origin/3.15
 ```
 
+The script declares its dependencies inline (PEP 723), so `uv run` needs no `--with` flags.
+
 | Flag | Default | Use |
 |---|---|---|
 | `--base` | `origin/3.15` | "before" version (fetch it first; SSH may fail, see below) |

.claude/skills/review-rendered-diff/scripts/render_diff.py

@@ -1,12 +1,22 @@
+# /// script
+# requires-python = ">=3.10"
+# dependencies = [
+#     "beautifulsoup4",
+#     "pillow",
+#     "playwright",
+#     "polib",
+# ]
+# ///
 """Render a PO file's translation changes as inline red/green diffs on the built HTML page.
 
 Builds the page twice (base version of the PO, then the working-tree version), finds every
 entry whose msgstr changed, injects an inline diff into the new page's paragraph, and saves
 one screenshot per changed paragraph plus a stitched overview.
 
 usage (from the repo root):
-  uv run --no-project --with polib --with beautifulsoup4 --with playwright --with pillow \
-    python .claude/skills/review-rendered-diff/scripts/render_diff.py howto/logging.po --base origin/3.15
+  uv run .claude/skills/review-rendered-diff/scripts/render_diff.py howto/logging.po --base origin/3.15
+
+Dependencies are declared above (PEP 723), so uv installs them into a cached environment.
 
 Outputs go to .render-review/<po path without .po>/ unless --out is given.
 """