docs(pivot): sweep tracking docs for wave-3/4 landings

[trilamsr]

Summary

Reconcile the four pivot-tracking docs (docs/rfcs/0013-distro-first-pivot.md, CHANGELOG.md, MILESTONES.md, docs/migration/v0.1-to-v0.2.md) with the wave-3 (PR-B1-shape sibling ports) and wave-4 (PR-B2-shape upstream-only ports + PR-F.1 + PR-J + PR-L + PR-N) landings. Pure doc sweep — no code or config touched.

What changed

docs/rfcs/0013-distro-first-pivot.md §migration

PR sequence rows updated with PR-number citations and landed markers:

• PR-A2 (landed, feat(ocb): PR-A2 — switch tracecore entrypoint to OCB-generated main #189, 2026-05-30)
• PR-B2 (landed, feat(pivot): PR-B2 — port nccl_fr off internal pipeline+consumer #201) — also enumerates sibling-receiver follow-ups under PR-B2 to dispel the slug collision with feat(pivot): PR-B2 — port dcgm off internal selftel + lifecycle #188's PR-B2-labelled dcgm port: stdoutexporter (feat(pivot): port stdoutexporter off internal pipeline+consumer #202), pyspy (feat(pivot): port pyspy off internal pipeline+consumer to upstream #203), kernelevents (feat(pivot): port kernelevents off internal pipeline+consumer to upstream #208), containerstdout (feat(pivot): port containerstdout off internal pipeline+consumer #209)
• PR-F.1 (landed) — fleshed-out delete list (internal/{selftelemetry,telemetry} + components/receivers/dcgm/ + pkg/dcgm/ + one orphan clockreceiver integration test)
• PR-F.2 re-scoped — now deletes the whole internal/{componentstatus,pipeline,pipelinebuilder,consumer,fanout,runtime/lifecycle} bundle in one cut once the last three pipeline+consumer-importing receivers land (feat(pivot): port k8sevents off internal pipeline+consumer to upstream #204 k8sevents, feat(pivot): PR-B3 — port clockreceiver off internal pipeline+consumer #205 clockreceiver, feat(pivot): port otlphttp off internal pipeline+consumer to upstream #207 otlphttp). Per the import-graph state — internal/componentstatus's only non-test consumer is internal/pipeline, so they delete together
• PR-G (landed, docs(rfcs): PR-G — fix stale RFC-0004 paths after archive move #182), PR-H (landed, docs(pivot): PR-H — PRINCIPLES + CONTRIBUTING pivot alignment #183)
• PR-I.1a (in flight — scaffold agent), PR-I.1b (pre-staged; gate satisfied by feat(pivot): PR-B2 — port nccl_fr off internal pipeline+consumer #201)
• PR-J (landed, docs(integration): PR-J — filelog/journald/k8sobjects/prometheus recipes #195) — kept existing marker
• PR-K.1 (in flight — separate agent landing)
• PR-L (landed, skeleton docs(migration): add v0.1.x → v0.2.0 guide skeleton (RFC-0013 PR-L) #179 + body docs(migration): PR-L — flesh v0.1.x→v0.2.0 guide body #191) — flagged as living document
• PR-N (landed, docs(security): PR-N — pyspy capability surface + SecurityContext guide #200) — shipped at v0.1.0 ahead of v0.3.0 as a doc-only update at docs/migration/v0.2-to-v0.3.md

CHANGELOG.md [Unreleased]

• Restructured the pivot wave list as four waves (was three). Wave 3 enumerates PR-B1-shape sibling ports + support infra (chore(pivot): PR-E unblock — bench heartbeat to hostmetricsreceiver #180-feat(pivot): port pyspy off internal selftel + lifecycle (PR-F unblock) #194/feat(pivot): port k8sevents off internal selftel + lifecycle (PR-F unblock) #196). Wave 4 enumerates PR-B2-shape upstream-only ports + PR-J (docs(integration): PR-J — filelog/journald/k8sobjects/prometheus recipes #195) + PR-F.1 (feat(pivot): PR-F.1 — delete internal moats (selftel/telemetry) + dcgm #206) + PR-N (docs(security): PR-N — pyspy capability surface + SecurityContext guide #200) + lint/TOCTOU hardening (fix(lint): allow parallel golangci-lint runs across sibling worktrees #198/test(lifecycle): harden TOCTOU concurrent-Add race window (kernelevents+k8sevents) #210).
• Tightened the PR-F.2 deferred note to point at the three open ports (feat(pivot): port k8sevents off internal pipeline+consumer to upstream #204/feat(pivot): PR-B3 — port clockreceiver off internal pipeline+consumer #205/feat(pivot): port otlphttp off internal pipeline+consumer to upstream #207) as the gate.

MILESTONES.md

• M1 (pipeline runtime) — status row now cites PR-A2 (feat(ocb): PR-A2 — switch tracecore entrypoint to OCB-generated main #189), PR-F.1 (feat(pivot): PR-F.1 — delete internal moats (selftel/telemetry) + dcgm #206), PR-F.2 gate (feat(pivot): port k8sevents off internal pipeline+consumer to upstream #204/feat(pivot): PR-B3 — port clockreceiver off internal pipeline+consumer #205/feat(pivot): port otlphttp off internal pipeline+consumer to upstream #207), PR-E (chore(pivot): PR-E unblock — bench heartbeat to hostmetricsreceiver #180), retains internal/config/ (still load-bearing for tracecore validate).
• M2 (self-telemetry) — status row now cites PR-F.1 (feat(pivot): PR-F.1 — delete internal moats (selftel/telemetry) + dcgm #206); flags internal/componentstatus as travelling with internal/pipeline in PR-F.2.
• M8 (DCGM receiver) — status flipped to landed-and-replaced: cites PR-F.1 (feat(pivot): PR-F.1 — delete internal moats (selftel/telemetry) + dcgm #206) deletion + PR-J (docs(integration): PR-J — filelog/journald/k8sobjects/prometheus recipes #195) docs/integrations/prometheus-scrape.md recipe. Notes the inert chart toggle retention until PR-K.3.

docs/migration/v0.1-to-v0.2.md

• §internal/* package deletion (PR-F) status flips from "not yet open" to "PR-F.1 landed (feat(pivot): PR-F.1 — delete internal moats (selftel/telemetry) + dcgm #206), PR-F.2 gated on three open ports".
• Open-items checklist expanded from 5 to 13 entries — tracks every PR letter the migration guide cares about (A2 / E / F.1 / F.2 / I.1a-c / J / K.1-3 / L / N) with PR numbers and links.

Why now

Tracking docs accumulated drift across wave-3 + wave-4 because every sibling-port PR (and the support-infra PRs around them) updated the bottom of CHANGELOG.md but did not always touch the upstream sequencing section in RFC-0013. Per memory rule [Keeping this document current]: status drift is a review blocker. This PR is the consolidated catch-up; future port PRs include their RFC-row flip in-PR.

What this PR does NOT change

• No code, no config, no YAML, no chart — only the four tracking docs.
• No new doc gates added; existing gates pass.
• No PRs other than the four named docs are modified.

Test plan

• bash scripts/doc-check.sh clean (33 test refs, 528 links resolve, comment-noise diff gate clean vs origin/main, all 13 gates green).
• Pre-commit hook (commitlint 72-char subject limit + DCO + AI-trailer gates) passed.
• Pre-push hook (make ci-fast equivalent: golangci-lint, go vet, go mod verify, no-autoupdate-check, doc-check.sh) passed on second attempt after git fetch origin main populated the worktree's origin/main ref — first push failed because the worktree previously tracked the (gone) pr-a2-ocb-main-swap branch, so doc-check.sh's comment-noise diff-scope gate exited 128 on the missing ref. Root cause fixed by the fetch; not a workaround.
• CI green on this branch.

NONE