Fix blank page: CSS height fix + error handling

Inspired by A Dark Room (resource management, incremental progression)
and The Jejune Institute (ARG mystery, layered narrative, multiple endings).

- Terminal-based gameplay with typewriter effects
- 4 phases: Reception → Decoding → Transmission → Awakening
- Resource system: Power, Bandwidth, Data
- 9 upgradable buildings (antenna, receiver, decoder, etc.)
- 10 explorable facility rooms with narrative content
- 5 NPC visitors with dialogue trees
- 12 signal transmissions, 8 research logs
- 4 endings: Contact, Silence, Truth, Sacrifice
- Spectrum analyzer and facility map canvases
- Save/load via localStorage
- Mobile-friendly with action buttons

README.md

@@ -0,0 +1,52 @@
+# Signal Elsewhere
+
+A text-based mystery/incremental game inspired by *A Dark Room* and *The Jejune Institute*.
+
+You awaken at a terminal in abandoned Lab 484. A signal pulses from somewhere unknown.
+Build equipment, decode transmissions, explore the facility, and uncover the truth about "Elsewhere."
+
+## Play
+
+Serve locally:
+
+```bash
+python3 -m http.server 8080
+```
+
+Open `http://localhost:8080` in your browser. Type `START` to begin.
+
+## Commands
+
+| Command | Description |
+|---|---|
+| LISTEN | Tune the receiver for signals |
+| BUILD <type> | Construct equipment (antenna, receiver, battery, etc.) |
+| DECODE | Analyze signal data |
+| EXPLORE | Search facility rooms |
+| TALK <name> | Speak with visitors |
+| TRANSMIT <msg> | Send a signal |
+| CHOOSE <path> | Choose your ending path |
+| STAND | Face the final choice |
+| STATUS | Check resources and progress |
+| SPECTRUM | Open signal visualizer |
+| MAP | Open facility map |
+| SAVE / LOAD | Save management |
+| HELP | Show all commands |
+
+## Android Build
+
+```bash
+npm install
+npx cap sync android
+npx cap open android
+```
+
+## Structure
+
+- `index.html` — single-file game source
+- `www/` — production web assets
+- `android/` — Android project (Capacitor)
+
+## License
+
+ISC