[IcekkwC]

Adds the ESP32-C5-Touch-LCD-1.9 board profile for esp_board_manager discovery without a product-local -c directory. Custom devices retain init_skip: true; applications own initialization, shared-SPI policy, panel sequencing and gauge handling.

Updated against upstream main (including v0.1.3) and resolved both generated catalog conflicts, retaining the upstream LR1121 ePaper board. Seven profiles / fourteen builds per resolved Board Manager version are documented. The three C5 YAML files still match the product definition.

Validation:

• 22/22 board-pack unit tests pass on Windows. The host-C brightness test executes through an ignored local cc launcher using Clang's Windows target and MSVC runtime; no board-pack test or installed compiler was modified.
• Metadata checks, regenerated table check, documentation navigation and git diff --check pass.
• Earlier generation and full ci/test_app builds without -c passed all four combinations: ESP-IDF 5.5.5 / 6.1 x Board Manager 0.7.2 / 0.7.3~1, with the local pack via manifest override_path. C5 YAML is unchanged since those checks; those four builds were not repeated for this documentation/upstream-merge update.
• The owner confirmed the product firmware's basic display, touch, sensor, storage and sleep/wakeup behavior on the correct ESP32-C5 rev v1.0 board. Product firmware was built through the shared local/CI script. These observations do not certify arbitrary consuming applications, every DMA path or a manufacturer-approved panel specification. SOC/model estimation and a 15-minute endurance threshold are outside the current product acceptance scope.

Keep this PR draft while upstream CI and hardware-document review remain outstanding. The schematic PDF still contains Chinese notes, a resistor-reference inconsistency and crowded labels; no PCB placement/designator drawing was supplied. The product retains its local board YAML until this PR is merged, the registry publishes the profile and consuming-application verification succeeds. Flash/PSRAM configuration remains application-owned.