- Add McpSettings (load/save mcpEnabled, mcpOverrideEnabled to /data/service/mcp/settings.properties)
- Add McpSystem: global state, canvas drawing (RGB565, BMP, PBM, text), I2S audio (WAV, MP3 via minimp3, tone, record)
- Add McpHandler: unauthenticated POST /api/mcp (JSON-RPC 2.0, 13 tools) and POST /api/screen/raw endpoints
- Route MCP endpoints before Basic Auth check in WebServerService::handleApiPost
- Start HTTP server at boot if either webServerEnabled OR mcpEnabled is set
- Fix setEnabled: start unconditionally when called with true; only stop if both WS and MCP are disabled
- Add McpSettingsApp (Settings category): toggle MCP service + screen override, show live endpoint URL
- Add McpOverrideApp (appId one.tactility.mcpscreen): full-screen LVGL canvas for LLM-driven display override
- Register both new apps in Tactility.cpp
**New Features**
* Runtime font accessors and new symbol fonts for text, launcher, statusbar, and shared icons.
* Added font height base setting to device.properties
* Text fonts now have 3 sizes: small, default, large
**Improvements**
* Renamed `UiScale` to `UiDensity`
* Statusbar, toolbar and many UI components now compute heights and spacing from fonts/density.
* SSD1306 initialization sequence refined for more stable startup.
* Multiple image assets replaced by symbol-font rendering.
* Many layout improvements related to density, font scaling and icon scaling
* Updated folder name capitalization for newer style
* **New Features**
* Added a HAL device module providing device enumeration, type queries and a HAL↔kernel bridge.
* **Improvements**
* Integrated HAL module into startup; standardized module names, includes and lifecycle logging; safer file append behavior; broader build support.
* **API Changes**
* Driver lifecycle now uses explicit add/remove semantics; C and HAL device type/lookup APIs clarified.
* **Chores**
* Added module README and Apache‑2.0 license; updated build configuration to include the new module.
* **Fixes**
* Updated tests and object file handling to behave correctly.
* **Documentation**
* Added new C coding style guide detailing naming conventions for files, directories, macros, constants, variables, functions, and type definitions with illustrative examples.
* Updated C++ coding style documentation with clarifications on C naming conventions and header directory organization patterns.
* **Refactor**
* Updated header include paths throughout the codebase to use lowercase naming conventions consistently.
* **New Features**
* Time and delay utilities added (ticks, ms, µs); SD card now uses an expansion-header CS pin; HTTP downloads warn when run on the GUI task and yield to avoid blocking.
* **Bug Fixes / Reliability**
* Many hard-crash paths converted to guarded checks to reduce abrupt termination and improve stability.
* **Tests**
* Unit tests added to validate time and delay accuracy.
* **Chores**
* License header and build/macro updates.
Adolfo Reyna