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Flatten Arma tiles over callback provider

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Valmo
2026-07-25 18:19:00 -03:00
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commit dd759dba74
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AGENTS.md
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@@ -4,6 +4,6 @@
- The generated result belongs in `tiles/`; do not hand-edit it. Run `docker compose up --build` or `./scripts/build-tiles.sh` to regenerate it.
- Preserve the public Arma endpoint format: `/tiles/{x}/{y}/{z}`. Internal files remain `tiles/{z}/{x}/{y}.png`.
- `CALLBACK_PROVIDER` is optional. When set, it must be an HTTPS template containing exactly `{z}`, `{x}`, and `{y}` in its path. Validate it before a tile build; no provider-specific host or branding belongs in application code or documentation.
- With a callback provider, configure MapLibre with `/base/{x}/{y}/{z}` as its raster layer below `/tiles/{x}/{y}/{z}`. This makes the provider visible through transparent edges of Arma overlays.
- With a callback provider, MapLibre uses only `/tiles/{x}/{y}/{z}`. The builder flattens Arma overlays over callback tiles, so transparent edges never expose black pixels.
- Keep source processing idempotent, do not modify input files, and preserve per-source error reporting in `tiles/metadata.json`.
- Before handing off changes, run `python3 tests/test_build_tiles.py`, `docker compose config --quiet`, and `docker compose build tiles` when Docker is available.