test(bloat): FastLED master ESP32-S3 end-to-end integration test

[zackees]

Summary

Closes#442 (Integration test for #434). Stacked on top of #447 → #446 → #445 → #443 → #436. Merge those first.

The Phase 2 + Phase 3 acceptance gate from the #434 meta. Exercises the full fbuild build → fbuild bloat flow against the latest FastLED master + ESP32-S3 toolchain to verify:

• build_info.json carries the four fbuild symbols: ingest toolchain paths from build_info.json + extend schema with nm/c++filt/readelf/objdump #428 toolchain paths (nm_path, cppfilt_path, readelf_path, objdump_path) and mirrors them onto the PIO-shape aliases block.
• fbuild bloat . works zero-flag and lands report.json + report.md at the documented Phase 3 path <project>/.fbuild/build/esp32s3/bloat-report/.
• stdout prints both absolute paths on exit (Phase 3 invariant).
• Symbol counts, totals, and the >100 map-derived (feat(symbols): map-derived synthesis for anonymous rodata pools (closes #425) #427) row count are within bounds generous enough not to flake on FastLED master drift, but tight enough to catch real regressions.
• Markdown output renders the top-flash table.

Run mode

Marked #[ignore] so ordinary cargo test runs aren't network-dependent. Wire into the nightly CI matrix via workflow_dispatch + scheduled weekly to surface FastLED master regressions here too:

soldr cargo test -p fbuild-cli --test bloat_esp32s3_fastled_master \
-- --ignored --nocapture

Test plan

• soldr cargo test -p fbuild-cli --test bloat_esp32s3_fastled_master — compiles, properly ignored by default (0 passed; 1 ignored).
• soldr cargo clippy -p fbuild-cli --tests -- -D warnings ✅
• Full network run is out-of-scope for the PR landing — the per-meta acceptance is "green on the nightly esp32s3 + FastLED-master matrix for two consecutive weeks" (Meta: fbuild bloat — first-class, end-to-end bloat analysis with build_info-driven toolchain resolution (no manual nm/c++filt, no PlatformIO, no side scripts) #434), which lives in the CI workflow that consumes this test.

🤖 Generated with Claude Code

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