feat: JSONC templates, schema alignment, and N-stage redline support

[mikeev261]

Overview

This PR significantly reduces maintenance overhead for the LMU car database by introducing a JSONC templating system to deduplicate identical cars. It also introduces major schema updates to support N-stage redlines, string-based RPM ranges, and pattern overrides.

Schema Changes

• N-Stage Redline & Blink intervals: Added support for N redline LED stages and per-stage redlineBlinkInterval (Int|Array) to better reflect complex dash displays (e.g., used by the Corvette Z06 GT3.R).

  "redlineBlinkInterval": [0, 250], // Stage 1 is solid (0), Stage 2 blinks at 250ms

• RPM Ranges: Added support for string-based RPM ranges (e.g., "6600-7015") in the ledRpm configuration, allowing a single LED to map to a dynamic RPM band (e.g., used extensively by the BMW M Hybrid V8).

  "ledRpm": [
    {
      "1": [7635, 7840, "6600-7015", "6600-7222", "6800-7428"]
    }
  ]

• Redline Color Pattern Overrides: Introduced the ability to define custom redline pattern aliases (e.g., "redline2") mapped to an array of colors, allowing complex per-LED redline color animations (e.g., used to create the sweeping redline on the BMW M Hybrid V8).

  "redline2": ["#FF0000FF","#00000000","#FF0000FF","#00000000","#FF0000FF"],
  "ledColor": ["#FFFF0000", "redline2", "#FF00FF00", "#FF00FF00", "#FF00FF00"]

• Variant Schema: Added a variants array to the base templates. Cars that share identical RPM profiles but have different visual properties (such as ledColor) or team names can now be grouped into a single base template, with their differences cleanly overridden inside the variants array (e.g., grouping dozens of individual LMP2 Oreca 07 and GT3 Aston Martin team profiles under single respective templates).

  {
    "ledNumber": 8,
    "ledColor": ["#FFFF0000", "#FF00FF00", "#FFFFFF00"],
    "variants": [
      {
        "carName": "GT3_TF Sport 2025",
        "carId": "GT3_TF Sport 2025",
        "fileName": "gt3-tf-sport-2025.json",
        "carClass": "GT3",
        "ledColor": ["#FF0000FF", "#FFFFFF00", "#FFFF0000"] // Cleanly overrides base color
      }
    ]
  }

Templating & Tooling

• JSONC Templates: Migrated the lmu source files from .json to .jsonc, allowing the use of // comments.
• Consolidated Redundant Profiles: We found 14 identical profiles across 7 Hypercar groups and consolidated them down to 7 canonical base templates. We consolidated 71 LMP2 profiles into just 2 base templates, 68 GT3 profiles into 11 base templates, and similarly grouped LMP3 profiles. In total, we reduced the number of profiles that need to be actively managed from 245 individual car files down to just 34 base templates.
• Fixed Alpine A424 RPMs: The hyper-alpine-2024.json file was incorrectly using the LMP2 Oreca RPM limits. This has been corrected by moving the team entry into the hyper-a424-2024.jsonc file.
• Build Scripts:
  • scripts/build_profiles.py: New compiler script that processes the .jsonc templates, expands all variants, drops comments, and natively exports the final .json files to data/lmu/.
  • scripts/rpm_shadow.py: Upgraded helper script that maintains shadow tables. Added a --log flag that allows maintainers to snapshot RPM data to track BOP updates over time.

All 245 original profiles in data/lmu/ continue to build accurately without regressions.