Learn the screen layout

Opening apps (Spotlight) and messaging the user (IM) both need exact input-box positions. First run only, capture the three pages below.

Read coordinates from screenshot (pixel-perfect), never camera peek — but DO peek to confirm what a tap did (keyboard up, chat open). Copy each element's bbox verbatim — the exact [left, top, right, bottom] (0–1, 3 decimals) the screenshot returned; never eyeball, re-estimate, or re-round. The keyboard must be the system default (no third-party keyboard).

How to save

Boxes are written through a single CLI — never edit layout.json by hand:

uv run python "$SKILL_DIR/screen_layout.py" record \
  --page <spotlight | chat-no-keyboard | chat-keyboard> \
  [--app <chat app>] \
  --box <field>=<l,t,r,b> [--box <field>=<l,t,r,b> ...]

• One --box per element you read; pass every box for a page in one call.
• --app = the chat app you opened (wechat, whatsapp, telegram, signal, …) — chat pages only; it labels the chat boxes. Omit for Spotlight.
• Each box is sanity-checked and saved to ~/.physiclaw/screen-layout/; the command prints the layout so far and how many boxes remain. A box rejected as out-of-region means you picked a neighbouring element — re-read that box off the screenshot and run again (re-recording a field overwrites it).
• $SKILL_DIR is provided by Claude Code; it resolves to this skill's directory.
• Check progress any time with uv run python "$SKILL_DIR/screen_layout.py" status.

Page 1 — Spotlight (keyboard up)

Fields: spotlight_input, space, backspace, return, spotlight_paste.

1. home_screen (skip if already on home — it opens the App Switcher there) → swipe down from mid-screen → Spotlight opens.
2. tap the search field; peek — keyboard up.
3. screenshot; read the search field (spotlight_input) and the keyboard's space, backspace, and return keys.
4. spotlight_paste: put any text on the clipboard, long-press the search field, screenshot, read the Paste button.
5. Save them all in one call, e.g.:

uv run python "$SKILL_DIR/screen_layout.py" record --page spotlight \
  --box spotlight_input=0.020,0.582,0.958,0.660 \
  --box space=... --box backspace=... --box return=... --box spotlight_paste=...

Page 2 — Chat input, keyboard DOWN

Field: chat_input_kb_hidden. Pass --app.

1. home_screen, then open the dock's IM app; if the dock has none, open one via im / open-app using the Spotlight boxes you just read. Enter any real thread, keyboard hidden.
2. screenshot; read the chat input bar.
3. ... record --page chat-no-keyboard --app wechat --box chat_input_kb_hidden=…

Page 3 — Chat input, keyboard UP

Fields: chat_input_kb_visible, send, chat_paste. Same --app as Page 2.

1. tap the chat input box; peek — keyboard fully up (all rows, no predictive-bar collapse).
2. screenshot; read the input bar and Send — either a bottom-right keyboard key (WeChat-style) or an input-bar button on the right (WhatsApp-style). Send hidden while the input is empty → tap any key so it appears (step 3 clears it).
3. chat_paste: clear the input (backspace until empty — a non-empty box shifts Paste in the popover), put text on the clipboard → long-press the input box → screenshot → read Paste.
4. Save all three with the same --app.

Done

When every box is in, the CLI reports the layout complete. From the next wake the SYSTEM prompt carries the full layout under ## Screen layout. Proceed with the original task, or emit >> IDLE if learning the layout was the only reason you woke.

Note: keyboard geometry is device-global — learned once from Spotlight, it holds in every app. Input/Send boxes are per-context but stable.