refactor(asapedgeprocessor): split god-object files into warm/cold/ingest/flush units

[zzylol]

What

Pure file-level reorganization of the asapedgeprocessor package: break up the 667-line god-object processor.go and rename the rest to a consistent warm_* / cold_* / flush_* / ingest convention. No behavior change.

Why

processor.go had grown to own OTel lifecycle, ingest traversal, shard locking, warm sum/sketch flush, cold fragment + intchunk cold-part shipping, accumulation, and shutdown sealing all at once. This splits those concerns into navigable files without changing any logic, as a low-risk first step before any deeper package extraction.

Source changes

Before	After
processor.go (667L)	processor.go (struct + ctor + lifecycle + forward), ingest.go, flush.go, shard.go, cold_encoder.go
config.go	config.go (schema: types/consts/structs), config_validate.go (normalized/valid/eligibility/Validate/familyFor)
coldpart_path.go	cold_intchunk_shipper.go, cold_intchunk_accum.go
shipper.go	cold_fragment_shipper.go
spool.go	cold_spool.go
sum.go / sketch.go	warm_sum.go / warm_sketch.go

Renames use git mv to preserve blame; the coldpart_path.go split keeps blame on the accumulator half.

Test files

Renamed the 6 that map 1:1 (sum_path→warm_sum, sketch_path→warm_sketch, cold_path→cold_fragment, coldpart_path→cold_intchunk, spool→cold_spool, stagger_path→flush_stagger). The cross-cutting scenario tests (all_families, sample_p_path, tier_path, smooth_flush, cold_density) are left as-is rather than lossily merged.

Verification

• Pure reorg proof: the set of 106 top-level declarations is byte-identical to main (diff empty).
• go build ./..., go vet ./..., go test ./... all green — ok in ~1.8s, same as the pre-change baseline.
• gofmt -l clean across the package.

🤖 Generated with Claude Code