[hyperdrivebeep]

Code hygiene from the post-beta audit, then the version bump for v0.2.0-beta.4. Nothing a person sees on screen changes.

Formatting

• The web sources are formatted with prettier 3.9.10 (width 100), and pnpm lint now runs prettier --check. The built bundle has the same CSS and the same screen text. Five web files that end up over the 600-line budget once formatted are frozen at their current size.
• 98 Python files are formatted with ruff format; their syntax trees are unchanged. CI's checks job and the local lint task now run ruff format --check, and a test keeps both steps in place.

Lint rules

• ruff: S110, S112 (silent except), S310 (unchecked URL scheme) and S608 (SQL built from strings). The 21 hits all put table or column names into a statement; each is marked with its reason, and tests and migrations have a per-file exception.
• eslint: jsx-a11y recommended. Two hits are fixed (a table row was an article; the dimmed page behind the project drawer is now role="presentation"). Six are line exceptions with their reasons.

Clean-up

• Removes the unused preview-timeline entry point.
• uiText also recognises notices that were saved in Japanese.
• Lowers four size baselines to the formatted line counts.

Release

• Version 0.2.0b4 in pyproject, the package, the web and root package.json, uv.lock, the foundation test and BETA.md.
• Adds docs/releases/v0.2.0-beta.4.md.

Validation

• Python formatting: every reformatted file was checked to parse to the same syntax tree as before.
• Web formatting: running prettier 3.9.10 again with the same config gives the same files.
• Local runs pass: tsc, eslint with prettier --check, vitest (151 files, including the three Python contract files), vite build, ruff check, ruff format --check, structure checks, and the Python fast suite (5,017 tests).
• Not run locally: basedpyright, because the local environment lacks optional packages. CI runs it.