refactor(src): group the flat src/ into area subfolders (move-only)

[Maxaubert]

Closes #486

Move-only regrouping of the 118 files that sat directly in src/, following chapter 01's source map. No code changes besides include lines and path-citing comments.

Folder map

Folder	Files
core/	main.cpp, uiaccess_gate.h, uiaccess_token.h, idle_policy.h, sched_priority.h, tick_stats.h, logging.*, log_queue.h, test_telemetry.h, hitch_record.*, tick_span.h, com_util.h, reload_gate.h
engine/	magnifier_model.h, engine_pick.h, shell_desktop.h, launch_quiesce.h
render/	render_engine.*, render_model.*, render_params.cpp, render_shaders.h, hlsl_compile.h, upscale_pass.*, upscale_shaders.h, upscale_nis.h, hdr_info.*, hdr_scale.h, band_window.h, png_dump.*
transform/	transform_model.*, transform.*, mag_host.*, tx_warm.h, comp_pin.*, mpo.h, mpo_boot.h, mpo_boot_logic.h, mpo_guard.h, native_cursor.h, zoom_ladder.h, dwm_watch.*
color/	color_filter.*, color_matrix.h, cursor_tint.*, cursor_tint_pixels.h
input/	input_router.*, keybind_rules.h, pointer_binds.h, keyboard_pan.h, typing_key.h, event_order.h, swallow_ledger.h
cursor/	cursor_mapper.*, lock_detector.*, drag_follow.h, gain_learner.h, cursor_sprite.*, cursor_blanker.*, cursor_decode.*, sprite_layer.h, crosshair.*, cursor_lock.*, inspect_focus.h, game_cursor.h, pan_glide.h
track/	focus_track.*, view_target.h, view_glide.h, detached_view.h, edge_pan.h, caret_rect.h, track_filter.h, java_bridge*, focus_identity.h
zoom/	zoom_controller.*
config/	config.*, config_path.h, ini_edit.*, profiles.*, profiles_io.h, profile_switch.h
tray/	tray_host.*, tray_ipc.h, tray_items.*, tray_status.h
platform/	installer_state.h, webview2_probe.h
unchanged	src/version.h, src/resource.h, src/wind.rc (version readers: tools/version.ps1, installer/wind.nsi, ui/vite.config.js, CI), src/tray_app/, src/config_ui/

Include rule

A Wind header is always included by its bare file name (#include "config.h"), from src/ and tests/ alike. build.bat defines WIND_INC (every src folder, plus src itself) and passes it to every cl call; CORE_SRC lists Wind.exe's source folders once (app, uiaccess and check). Former path includes ("../config.h" in tray_app/config_ui, "../src/x.h" in tests) became bare. Exception: rc.exe gets no include path, so wind_tray.rc keeps "../resource.h"/"../version.h" (unchanged). Documented in CLAUDE.md and chapter 11 ("Source folders and includes"); chapter 01's source map gains a folder column.

Commits

1. git mv only (118 renames, 100% similarity).
2. build.bat (WIND_INC, CORE_SRC, explicit :test/tray/config source lists) and include lines.
3. Docs, CLAUDE.md, code/ui/tools/NSIS comments citing src/<file>; frozen docs/specs and docs/history keep old paths, their READMEs say so.

Gates (all run on the final tree, clean build\)

• build.bat check: exit 0
• build.bat test: exit 0, 643/643 test cases
• build.bat, build.bat uiaccess, build.bat tray, build.bat config (after npm ci): exit 0
• npm run test:rules: 5/5; npx playwright test: 205 passed
• build.bat installer (with build\WindUA.exe staged from the uiaccess build as release.ps1 does) + tools\installer_check.ps1: all checks passed (install smoke skipped, needs elevation)
• . tools\version.ps1; Get-WindVersion: 0.29.3
• Grep for every old src/<file> / src\<file> path outside frozen docs: 0 hits
• git diff -M --summary origin/main...HEAD: 118 renames; 97 at 100%, the other 21 are 95-99% because an include line or a comment citing a src/ path changed

Not verified: deploy of the signed UIAccess build and a live run (no runtime change expected; binaries built from the same sources). CI's release/alpha workflows run build.bat unchanged.

🤖 Generated with Claude Code

https://claude.ai/code/session_01TdjopXZfsUiesYxYLYHEdH