docs+scripts: finish <quant>/ path migration across full repo sweep
Repo-wide follow-up to the compose quant-layer move (9821c94). The
mechanical move + registry/launch/test rewire covered the launchable
surface; a full-tree sweep found compose-path refs the move invalidated
in docs, two functional scripts, and one half-migrated mapping.
Functional fixes:
- bench-row-formatter.sh infer_compose_path(): 6 dual entries
(int8-tq3, tq3-mtp-genesis, tq3-nomtp, tq3-mtp, int8, bf16) were left
at bare dual/<file>.yml while the rest were migrated -> would emit
dead compose paths into BENCHMARKS rows.
- residency-instrument/run-instrumented-soak.sh: case->COMPOSE_FILE
paths (long-text, long-text-no-mtp, tools-text, dual default) now
resolve under <quant>/.
Docs: README layout line + tree, engine/model READMEs, patch-README
quick-recipes, diagnostics, FAQ/CLIFFS/KV_MATH/DTYPE/MULTI/SINGLE/
STRUCTURED_COT/TQ3/UPSTREAM, issue template, sglang cross-refs
(-> vllm prod path). Per-model targets: qwen-vllm->autoround-int4,
llama-cpp->unsloth-q4km, gemma defaults (bf16-mtp/fp8-mtp),
carnice->own slug dir.
Intentionally left as historical/append-only records: CHANGELOG x2,
BENCHMARKS row-labels (live paths already correct in row bodies),
calibration source: provenance citations, switch.sh/parity history
comments. Separate follow-ups: gpu-mode.sh (#417 deprecated-repo
repoint), bench-row-formatter compose_display() docker-compose.yml
branch (PR-B). Flagged pre-existing-stale: dual/int8-tq3.yml in
pr40798/pr40914 READMEs (predate this refactor; ambiguous target).
Guard tests (registry-disk, mounts-resolve, switch-parity,
launch-compat) all PASS post-edit. Leak-clean.
Co-Authored-By: Claude Opus 4.7 (1M context) <[email protected]>
