engine: RAMMAP, NUMA, and telemetry (PR1 of #377 split)

[BColsey]

Draft successor — supersedes #377. One of three dependent PRs reconstructed file-by-file from the frozen green donor 5f6f31a (onto base 72ddb673). Do not merge #377; it is closed as superseded once all three are open + linked.

• Supersedes: feat: Add NUMA-aware RAM-disk streaming #377
• Sibling successors: ramdisk: headless planning, staging, mounts, recovery + tokenized CLI (PR2 of #377 split) #821 (headless planning/staging/mounts/recovery), managed runner, deterministic benchmark, and causal evidence (PR3 draft of #377 split) #822 (managed runner/benchmark/evidence)
• Chain: PR1 → PR2 → PR3 (this is the root)
• Design: docs/superpowers/specs/2026-08-01-pr-377-stabilization-design.md (PR1, L76-80)
• Ledger: docs/superpowers/specs/2026-08-02-pr-377-successor-reconstruction.md

Scope

Engine C RAMMAP/NUMA + CUDA accounting, strict telemetry parsing, and their tests/docs. Excludes planning, mounts, lifecycle, benchmark, UI.

• Engine: c/{colibri.c, backend_cuda.cu, compat.h, st.h, telemetry.h}, c/Makefile, c/resource_plan.py
• Serve/telemetry: c/openai_server.py (PROF parsing)
• Tests: test_rammap.c, test_resource_masks.c, test_uring.c, test_serve_sentinel.c, test_backend_cuda.cu, test_rammap_e2e.py (parse logic), test_openai_server.py, test_openai_tools_e2e.py, test_fp8_e2e_repack_load.py, test_resource_plan.py
• Docs: docs/serve_protocol.md, docs/cuda.md

Reconstruction work

• STRICTEN PROF telemetry parsing (design L78-80): reject field counts other than 10/17/18; read physical_ssd_valid as == "1" (donor uses bool(int(...))); reject non-finite numerics; a malformed known-kind record is a protocol error.
• Make docs/serve_protocol.md normative at the PROF contract.
• Hunk-split c/Makefile (test targets here; install rules → PR2) and test_rammap_e2e.py (parse logic here; live tmpfs cells → PR3).

Dependency

None — PR1 is the root. openai_server.py is stdlib-only; C tests compile against PR1 headers only.

Build verification (subagent worktree)

• make -C c check GREEN end-to-end: C build + 41 test binaries, C suite ALL PASS (0 failures), Python discovery 302 passed / 0 failed / 18 expected skips. Standalone — no PR2/PR3 dependency.