Krzysztof Rudnicki
4a5e350baf
gatelock 0.4.0 (pinned here) stops the viewport following the app's own focus_set(): on 2026-08-03 that moved the screen locker's lock screen to mid-content and back with nobody touching the keyboard, and this gate uses the same viewport. Scrolling now happens only on the user's own keypress, wheel or click. That makes fitting the screen the gate's own responsibility rather than something a scrollbar covers for, and with a day of meals logged this one did not: 770px of content in a 739px pane. Trimmed the vertical rhythm (the title is one step down the scale, and the gaps around the description, suggestions, macros and footer are one step tighter) for 718px, with room for the dashboard to keep growing. Its layout test now requires the gate to *fit* rather than merely be reachable by scrolling, empty and populated. Dropped the 1024x600 tier: no machine runs it, this gate cannot reach it without dropping content, and a target nobody uses is a constraint that only ever costs. The probe presses Tab before moving focus, because a bare focus_set() no longer scrolls -- it would have been testing a path no user can take. The Tk fakes learned pack_forget(), which the viewport calls to take the scrollbar down whenever the content fits. Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01BsXnTHyuuCUZsqetTaajcF |
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|---|---|---|
| .github/workflows | ||
| app | ||
| diet_guard | ||
| docs | ||
| scripts | ||
| .gitignore | ||
| .mcp.json | ||
| .pre-commit-config.yaml | ||
| CLAUDE.md | ||
| DESIGN_AUDIT_TODO.md | ||
| diet-guard-gate.service | ||
| diet-guard-gate.timer | ||
| diet-guard-sync.service | ||
| diet-guard-sync.timer | ||
| install.sh | ||
| pyproject.toml | ||
| README.md | ||
| requirements.txt | ||
diet_guard
A log-to-unlock gate: locks the desktop until a meal is logged once a meal slot (08:00 / 12:00 / 16:00 / 20:00) has elapsed without one, and tracks a sealed daily calorie/macro budget.
Install
bash install.sh
This installs the package + dependencies into system Python's user
site-packages (the systemd service runs /usr/bin/python directly, not a
venv — see CLAUDE.md), installs the systemd user timer, seals your daily
budget, and locks the budget file immutable.
Usage
python -m diet_guard init # one-time: compute and seal today's budget
python -m diet_guard gate --demo # test the lock window (safe, closeable)
The timer runs the gate automatically every ~30 minutes; no manual invocation is needed once installed.
MCP server
An optional Model Context Protocol server
lets an MCP client (Claude Code and its subagents) query today's intake and log
meals as typed tools instead of shelling out to the CLI. It runs in its own
venv (~/.venvs/diet-guard-mcp) so the mcp SDK never touches the
dependency-light system/CLI python path.
Tools:
get_status— today's consumed kcal + macros, the consumption band (on track/approaching limit/OVER BUDGET, or none when no budget is sealed), plus due / logged / current meal slots.list_today— today's logged meals (description, kcal, macros, source, slot).get_slots— the day's fixed meal slots and the current one.log_meal(description, grams=, kcal=, protein=, carbs=, fat=, slot=, confirm=False)— gated write: withconfirm=Falseit previews the resolved nutrition and target slot and mutates nothing; onlyconfirm=Trueappends the entry. The gate is intrinsic — never add this tool to a permission allowlist, since a client's auto-approve mode would otherwise bypass the human confirmation.
The read tools deliberately never expose the raw daily budget number (only the
qualitative band), nor the sealed .budget file, the shared HMAC key, or the
sync token — the budget stays hidden by design.
Setup:
bash scripts/setup_mcp.sh # create the venv and install diet_guard[mcp]
Then restart Claude Code in this repo and approve the project MCP server
(registered in .mcp.json).
Development
python -m venv .venv && .venv/bin/pip install -r requirements.txt
.venv/bin/pre-commit install && .venv/bin/pre-commit install --hook-type pre-push
.venv/bin/python -m pytest diet_guard/tests/ --cov=diet_guard --cov-branch --cov-fail-under=100
See CLAUDE.md for scheduling details and production deployment gotchas,
and docs/design.md for the original feature spec.