chore: drop non-code junk (pi-mono-reference, runtime state, root duplicates)

Remove files that should never have been tracked:

- pi-mono-reference/: 688-file copy of an upstream monorepo, zero imports,
  used only as offline human reference
- build/electron-builder.runtime.json: environment-specific build artifact
  with hardcoded local paths
- state/cancel-signal-state.json: runtime state written by the app
- prompt.txt, logo.svg (root): exact duplicates of the canonical copies
  under .planning/archive/ and assets/

Add state/ to .gitignore so future runtime state stays out.

pi-mono-reference/packages/coding-agent/examples/extensions/doom-overlay/doom/build.sh

@@ -1,152 +0,0 @@
-#!/usr/bin/env bash
-# Build DOOM for pi-doom using doomgeneric and Emscripten
-
-set -e
-
-SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
-PROJECT_ROOT="$(dirname "$SCRIPT_DIR")"
-DOOM_DIR="$PROJECT_ROOT/doom"
-BUILD_DIR="$PROJECT_ROOT/doom/build"
-
-echo "=== pi-doom Build Script ==="
-
-# Check for emcc
-if ! command -v emcc &> /dev/null; then
-    echo "Error: Emscripten (emcc) not found!"
-    echo ""
-    echo "Install via Homebrew:"
-    echo "  brew install emscripten"
-    echo ""
-    echo "Or manually:"
-    echo "  git clone https://github.com/emscripten-core/emsdk.git ~/emsdk"
-    echo "  cd ~/emsdk && ./emsdk install latest && ./emsdk activate latest"
-    echo "  source ~/emsdk/emsdk_env.sh"
-    exit 1
-fi
-
-# Clone doomgeneric if not present
-if [ ! -d "$DOOM_DIR/doomgeneric" ]; then
-    echo "Cloning doomgeneric..."
-    cd "$DOOM_DIR"
-    git clone https://github.com/ozkl/doomgeneric.git
-fi
-
-# Create build directory
-mkdir -p "$BUILD_DIR"
-
-# Copy our platform file
-cp "$DOOM_DIR/doomgeneric_pi.c" "$DOOM_DIR/doomgeneric/doomgeneric/"
-
-echo "Compiling DOOM to WebAssembly..."
-cd "$DOOM_DIR/doomgeneric/doomgeneric"
-
-# Resolution - 640x400 is doomgeneric default, good balance of speed/quality
-RESX=${DOOM_RESX:-640}
-RESY=${DOOM_RESY:-400}
-
-echo "Resolution: ${RESX}x${RESY}"
-
-# Compile with Emscripten (no sound)
-emcc -O2 \
-    -s WASM=1 \
-    -s EXPORTED_FUNCTIONS="['_doomgeneric_Create','_doomgeneric_Tick','_DG_GetFrameBuffer','_DG_GetScreenWidth','_DG_GetScreenHeight','_DG_PushKeyEvent','_malloc','_free']" \
-    -s EXPORTED_RUNTIME_METHODS="['ccall','cwrap','getValue','setValue','FS']" \
-    -s ALLOW_MEMORY_GROWTH=1 \
-    -s INITIAL_MEMORY=33554432 \
-    -s MODULARIZE=1 \
-    -s EXPORT_NAME="createDoomModule" \
-    -s ENVIRONMENT='node' \
-    -s FILESYSTEM=1 \
-    -s FORCE_FILESYSTEM=1 \
-    -s EXIT_RUNTIME=0 \
-    -s NO_EXIT_RUNTIME=1 \
-    -DDOOMGENERIC_RESX="$RESX" \
-    -DDOOMGENERIC_RESY="$RESY" \
-    -I. \
-    am_map.c \
-    d_event.c \
-    d_items.c \
-    d_iwad.c \
-    d_loop.c \
-    d_main.c \
-    d_mode.c \
-    d_net.c \
-    doomdef.c \
-    doomgeneric.c \
-    doomgeneric_pi.c \
-    doomstat.c \
-    dstrings.c \
-    f_finale.c \
-    f_wipe.c \
-    g_game.c \
-    hu_lib.c \
-    hu_stuff.c \
-    i_cdmus.c \
-    i_input.c \
-    i_endoom.c \
-    i_joystick.c \
-    i_scale.c \
-    i_sound.c \
-    i_system.c \
-    i_timer.c \
-    i_video.c \
-    icon.c \
-    info.c \
-    m_argv.c \
-    m_bbox.c \
-    m_cheat.c \
-    m_config.c \
-    m_controls.c \
-    m_fixed.c \
-    m_menu.c \
-    m_misc.c \
-    m_random.c \
-    memio.c \
-    p_ceilng.c \
-    p_doors.c \
-    p_enemy.c \
-    p_floor.c \
-    p_inter.c \
-    p_lights.c \
-    p_map.c \
-    p_maputl.c \
-    p_mobj.c \
-    p_plats.c \
-    p_pspr.c \
-    p_saveg.c \
-    p_setup.c \
-    p_sight.c \
-    p_spec.c \
-    p_switch.c \
-    p_telept.c \
-    p_tick.c \
-    p_user.c \
-    r_bsp.c \
-    r_data.c \
-    r_draw.c \
-    r_main.c \
-    r_plane.c \
-    r_segs.c \
-    r_sky.c \
-    r_things.c \
-    s_sound.c \
-    sha1.c \
-    sounds.c \
-    st_lib.c \
-    st_stuff.c \
-    statdump.c \
-    tables.c \
-    v_video.c \
-    w_checksum.c \
-    w_file.c \
-    w_file_stdc.c \
-    w_main.c \
-    w_wad.c \
-    wi_stuff.c \
-    z_zone.c \
-    dummy.c \
-    -o "$BUILD_DIR/doom.js"
-
-echo ""
-echo "Build complete!"
-echo "Output: $BUILD_DIR/doom.js and $BUILD_DIR/doom.wasm"

pi-mono-reference/packages/coding-agent/examples/extensions/doom-overlay/doom/build/doom.js

@@ -1,21 +0,0 @@
-var createDoomModule = (() => {
-  var _scriptName = typeof document != 'undefined' ? document.currentScript?.src : undefined;
-  if (typeof __filename != 'undefined') _scriptName = _scriptName || __filename;
-  return (
-async function(moduleArg = {}) {
-  var moduleRtn;
-
-var Module=moduleArg;var readyPromiseResolve,readyPromiseReject;var readyPromise=new Promise((resolve,reject)=>{readyPromiseResolve=resolve;readyPromiseReject=reject});var ENVIRONMENT_IS_WORKER=false;var ENVIRONMENT_IS_NODE=true;if(ENVIRONMENT_IS_NODE){}var moduleOverrides={...Module};var arguments_=[];var thisProgram="./this.program";var quit_=(status,toThrow)=>{throw toThrow};var scriptDirectory="";function locateFile(path){if(Module["locateFile"]){return Module["locateFile"](path,scriptDirectory)}return scriptDirectory+path}var readAsync,readBinary;if(ENVIRONMENT_IS_NODE){var fs=require("fs");var nodePath=require("path");scriptDirectory=__dirname+"/";readBinary=filename=>{filename=isFileURI(filename)?new URL(filename):filename;var ret=fs.readFileSync(filename);return ret};readAsync=async(filename,binary=true)=>{filename=isFileURI(filename)?new URL(filename):filename;var ret=fs.readFileSync(filename,binary?undefined:"utf8");return ret};if(!Module["thisProgram"]&&process.argv.length>1){thisProgram=process.argv[1].replace(/\\/g,"/")}arguments_=process.argv.slice(2);quit_=(status,toThrow)=>{process.exitCode=status;throw toThrow}}else{}var out=Module["print"]||console.log.bind(console);var err=Module["printErr"]||console.error.bind(console);Object.assign(Module,moduleOverrides);moduleOverrides=null;if(Module["arguments"])arguments_=Module["arguments"];if(Module["thisProgram"])thisProgram=Module["thisProgram"];var wasmBinary=Module["wasmBinary"];var wasmMemory;var ABORT=false;var EXITSTATUS;var HEAP8,HEAPU8,HEAP16,HEAPU16,HEAP32,HEAPU32,HEAPF32,HEAP64,HEAPU64,HEAPF64;var runtimeInitialized=false;var isFileURI=filename=>filename.startsWith("file://");function updateMemoryViews(){var b=wasmMemory.buffer;Module["HEAP8"]=HEAP8=new Int8Array(b);Module["HEAP16"]=HEAP16=new Int16Array(b);Module["HEAPU8"]=HEAPU8=new Uint8Array(b);Module["HEAPU16"]=HEAPU16=new Uint16Array(b);Module["HEAP32"]=HEAP32=new Int32Array(b);Module["HEAPU32"]=HEAPU32=new Uint32Array(b);Module["HEAPF32"]=HEAPF32=new Float32Array(b);Module["HEAPF64"]=HEAPF64=new Float64Array(b);Module["HEAP64"]=HEAP64=new BigInt64Array(b);Module["HEAPU64"]=HEAPU64=new BigUint64Array(b)}function preRun(){if(Module["preRun"]){if(typeof Module["preRun"]=="function")Module["preRun"]=[Module["preRun"]];while(Module["preRun"].length){addOnPreRun(Module["preRun"].shift())}}callRuntimeCallbacks(onPreRuns)}function initRuntime(){runtimeInitialized=true;if(!Module["noFSInit"]&&!FS.initialized)FS.init();TTY.init();wasmExports["__wasm_call_ctors"]();FS.ignorePermissions=false}function postRun(){if(Module["postRun"]){if(typeof Module["postRun"]=="function")Module["postRun"]=[Module["postRun"]];while(Module["postRun"].length){addOnPostRun(Module["postRun"].shift())}}callRuntimeCallbacks(onPostRuns)}var runDependencies=0;var dependenciesFulfilled=null;function getUniqueRunDependency(id){return id}function addRunDependency(id){runDependencies++;Module["monitorRunDependencies"]?.(runDependencies)}function removeRunDependency(id){runDependencies--;Module["monitorRunDependencies"]?.(runDependencies);if(runDependencies==0){if(dependenciesFulfilled){var callback=dependenciesFulfilled;dependenciesFulfilled=null;callback()}}}function abort(what){Module["onAbort"]?.(what);what="Aborted("+what+")";err(what);ABORT=true;what+=". Build with -sASSERTIONS for more info.";var e=new WebAssembly.RuntimeError(what);readyPromiseReject(e);throw e}var wasmBinaryFile;function findWasmBinary(){return locateFile("doom.wasm")}function getBinarySync(file){if(file==wasmBinaryFile&&wasmBinary){return new Uint8Array(wasmBinary)}if(readBinary){return readBinary(file)}throw"both async and sync fetching of the wasm failed"}async function getWasmBinary(binaryFile){if(!wasmBinary){try{var response=await readAsync(binaryFile);return new Uint8Array(response)}catch{}}return getBinarySync(binaryFile)}async function instantiateArrayBuffer(binaryFile,imports){try{var binary=await getWasmBinary(binaryFile);var instance=await WebAssembly.instantiate(binary,imports);return instance}catch(reason){err(`failed to asynchronously prepare wasm: ${reason}`);abort(reason)}}async function instantiateAsync(binary,binaryFile,imports){if(!binary&&typeof WebAssembly.instantiateStreaming=="function"&&!ENVIRONMENT_IS_NODE){try{var response=fetch(binaryFile,{credentials:"same-origin"});var instantiationResult=await WebAssembly.instantiateStreaming(response,imports);return instantiationResult}catch(reason){err(`wasm streaming compile failed: ${reason}`);err("falling back to ArrayBuffer instantiation")}}return instantiateArrayBuffer(binaryFile,imports)}function getWasmImports(){return{env:wasmImports,wasi_snapshot_preview1:wasmImports}}async function createWasm(){function receiveInstance(instance,module){wasmExports=instance.exports;wasmMemory=wasmExports["memory"];updateMemoryViews();removeRunDependency("wasm-instantiate");return wasmExports}addRunDependency("wasm-instantiate");function receiveInstantiationResult(result){return receiveILine truncated
-
-
-  return moduleRtn;
-}
-);
-})();
-if (typeof exports === 'object' && typeof module === 'object') {
-  module.exports = createDoomModule;
-  // This default export looks redundant, but it allows TS to import this
-  // commonjs style module.
-  module.exports.default = createDoomModule;
-} else if (typeof define === 'function' && define['amd'])
-  define([], () => createDoomModule);

pi-mono-reference/packages/coding-agent/examples/extensions/doom-overlay/doom/doomgeneric_pi.c

@@ -1,72 +0,0 @@
-/**
- * pi-doom platform implementation for doomgeneric
- *
- * Minimal implementation - no sound, just framebuffer and input.
- */
-
-#include "doomgeneric.h"
-#include "doomkeys.h"
-#include <emscripten.h>
-#include <stdint.h>
-
-// Key event queue
-#define KEY_QUEUE_SIZE 256
-static struct {
-  int pressed;
-  unsigned char key;
-} key_queue[KEY_QUEUE_SIZE];
-static int key_queue_read = 0;
-static int key_queue_write = 0;
-
-// Get the framebuffer pointer for JS to read
-EMSCRIPTEN_KEEPALIVE
-uint32_t *DG_GetFrameBuffer(void) { return DG_ScreenBuffer; }
-
-// Get framebuffer dimensions
-EMSCRIPTEN_KEEPALIVE
-int DG_GetScreenWidth(void) { return DOOMGENERIC_RESX; }
-
-EMSCRIPTEN_KEEPALIVE
-int DG_GetScreenHeight(void) { return DOOMGENERIC_RESY; }
-
-// Push a key event from JavaScript
-EMSCRIPTEN_KEEPALIVE
-void DG_PushKeyEvent(int pressed, unsigned char key) {
-  int next_write = (key_queue_write + 1) % KEY_QUEUE_SIZE;
-  if (next_write != key_queue_read) {
-    key_queue[key_queue_write].pressed = pressed;
-    key_queue[key_queue_write].key = key;
-    key_queue_write = next_write;
-  }
-}
-
-void DG_Init(void) {
-  // Nothing to initialize
-}
-
-void DG_DrawFrame(void) {
-  // Frame is in DG_ScreenBuffer, JS reads via DG_GetFrameBuffer
-}
-
-void DG_SleepMs(uint32_t ms) {
-  // No-op - JS handles timing
-  (void)ms;
-}
-
-uint32_t DG_GetTicksMs(void) {
-  return (uint32_t)emscripten_get_now();
-}
-
-int DG_GetKey(int *pressed, unsigned char *key) {
-  if (key_queue_read != key_queue_write) {
-    *pressed = key_queue[key_queue_read].pressed;
-    *key = key_queue[key_queue_read].key;
-    key_queue_read = (key_queue_read + 1) % KEY_QUEUE_SIZE;
-    return 1;
-  }
-  return 0;
-}
-
-void DG_SetWindowTitle(const char *title) {
-  (void)title;
-}