[docs] Add Dreamverse integration provenance

Apply Dreamverse monorepo changes for stack slice 1/13 from the source branch.

Source-Branch: will/dreamverse-monorepo
Source-SHA: 03d3e61
Dreamverse-Stack: 1/13
Co-authored-by: SolitaryThinker <wlsaidhi@gmail.com>
Co-authored-by: Matthew Noto <99706358+RandNMR73@users.noreply.github.com>
Co-authored-by: XOR-op <17672363+XOR-op@users.noreply.github.com>
Co-authored-by: Zhang Peiyuan <42993249+jzhang38@users.noreply.github.com>

Author: 5 people

.agents/STATUS.md

@@ -0,0 +1,201 @@
+# Dreamverse Integration — Memory Index
+
+Living knowledge base for the FastVideo ↔ Dreamverse ↔ Dynamo integration.
+Tracks the public API refactor (PRs 0-17), the LTX-2 streaming server
+upstream, the Dreamverse switch from `FastVideo-internal` to public
+`FastVideo`, and the NVFP4 quantization landing.
+
+**Last reconciled:** 2026-05-06 (**D-26** EXECUTED — rebased
+`will/dreamverse-monorepo` directly onto `origin/main` (`c17d33bf`)
+via `git rebase origin/main`; 66 commits cleanly replayed; force-
+pushed via `--force-with-lease`. New tip `83829c5e`. Local backup
+branch `will/dreamverse-monorepo-pre-main-rebase-backup-20260506`
+preserved at the pre-rebase tip `2ee839a3`. PR #1288 on
+`will/ltx2_sr_port` is untouched. The branch is now ready to open
+as a single PR against main.
+
+**Earlier — D-21** EXECUTED — chunk-stutter root cause
+analysis + NVENC build path + opt-in `--nvenc` flag + benchmark regression
+test. 3 parallel explore agents confirmed apps/dreamverse matches
+FastVideo-internal byte-for-byte on NVFP4 + torch.compile coverage; stutter
+is NOT a regression. Software libx264 encoding consumes ~22% of segment
+wall-time. Built ffmpeg with NVENC support; B200 silicon doesn't have NVENC
+encoder hardware so the path is currently moot on this dev host but works
+on RTX 50-series / T4 / A10 deploys. Benchmark captured libx264 ultrafast
+at 611ms median (8.25x realtime in isolation). Open follow-ups D-22/D-23/D-24.
+
+**Earlier — D-20** EXECUTED — segment-2 BrokenPipe
+root cause was a TWO-direction silent drop of LTX-2 audio kwargs in
+public `VideoGenerator` (inbound `SamplingParam.update()` rejected
+`audio_num_frames`/`ltx2_audio_clean_latent`/etc. as unknown fields and
+`logger.error`'d, outbound result dict didn't surface
+`ltx2_audio_latents` from `output_batch.extra`). Ported the
+FastVideo-internal extra-overrides routing block + made `update()`
+strict + added regression test (7 tests, all pass) + landed 4 commits
+on `will/dreamverse-monorepo` @ `5eaf0a13` (11 commits ahead of
+`fbd823df`). End-to-end verified on GPU4: `Cached audio latents shape
+=(1, 8, 126, 16) for segment 2`, `Segment 2: relayed av chunks=22,
+bytes=3.8MB`, no BrokenPipeError. Public-API fix needs cherry-pick to
+`will/ltx2_sr_port` for PR #1288 — see open-threads.md item D-20-CP.
+**D-19** EXECUTED previously: Dreamverse migration landed on
+`will/dreamverse-monorepo` @ `c1fe5d4c` (5 commits ahead of
+`will/ltx2_sr_port` HEAD `fbd823df`). 164 files, 53,294 LOC, 31,725
+files under `apps/dreamverse/`. e2e PASSES against migrated code (8/8
+Playwright in 5.1s, `/proc/$PID/cwd` verified). Significant deviation
+from [integration-plan.md](integration-plan.md): the plan's "DELETE
+generic-merged from Dreamverse, import public substitutes" assumption
+was invalid (public APIs aren't drop-ins) — generic-merged files now
+carried PRODUCT-LOCAL inside `apps/dreamverse/server/`. Public
+`fastvideo.entrypoints.streaming.*` reverts to `fbd823df` state. See
+[decisions-log.md D-19](decisions-log.md#d-19) +
+[D-20](decisions-log.md#d-20) for full context.).
+FastVideo `will/ltx2_sr_port` @ HEAD (post-D-17 STACK.md removal +
+integration-review.md addition + integration-plan.md addition + D-18
+reconciliation). Dreamverse `will/integrate-public-fastvideo` @ `ec8ef92`.
+PRs #1257 / #1258 / #1284 / #1286 MERGED to main. **PR #1287 CLOSED
+(in favor of consolidation); PR #1288 OPEN as the single mega-PR
+landing the entire `will/ltx2_sr_port` chain at once** (LTX-2 SR
+runtime + NVFP4 + `generate_async`/Dynamo contract + agents memory dir).
+Split branches kept as historical bookmarks; STACK.md model **abandoned** —
+see [decisions-log.md D-17](decisions-log.md#d-17). Local backup
+`will/ltx2_sr_port-pre-1286-rebase` @ `1baa60bb` preserves the
+pre-rebase chain.
+
+## Fresh-context onboarding (read in order)
+
+If you're an agent picking up this work for the first time, do these
+**5 things in this order**. Once done, you have full context to continue
+any open thread, commit correctly, push, and propagate to the open PR.
+
+1. **Confirm worktree state** — run the "First 60 seconds" block in
+   [runbook.md](runbook.md). Tells you the branch is right, services
+   are up, and PR #1286's head matches what this dir claims.
+
+2. **Read [state.md](state.md)** — single-page snapshot of branch tips,
+   live services, test status, pre-existing failures, "do not pop"
+   stashes.
+
+3. **Read [pr-roadmap.md](pr-roadmap.md)** — what PRs landed, what's in
+   flight, what's planned. Identifies the active open PR (currently
+   #1286) and where it sits in the dependency chain.
+
+4. **Read [open-threads.md](open-threads.md)** — prioritized work items
+   with effort estimates and dependencies. The "Recommended pull order"
+   section is a ready-made TODO list if you need one.
+
+5. **Skim [runbook.md](runbook.md) end-to-end** — operational how-to:
+   verify, commit (with co-author trailers), push, propagate to PR
+   #1286, maintain the memory dir, and the "Common pitfalls" section
+   that catches the recurring traps.
+
+Skip the deep-context docs (design / streaming-server / cross-repo /
+quantization / decisions-log) until you need them — they're indexed in
+the "Deep-dive reading guide" below.
+
+Final check: run the "Self-test" block at the bottom of
+[runbook.md](runbook.md). If you can answer all 8 questions from this
+dir alone, you're ready. If you can't, the gap is a memory-dir bug —
+file it in [open-threads.md](open-threads.md) before continuing.
+
+## Deep-dive reading guide
+
+| Question / task | File |
+|---|---|
+| "What's running right now? What just landed?" | [state.md](state.md) |
+| "How do I commit / push / propagate to PR #1286?" | [runbook.md](runbook.md) |
+| "Why is the schema typed this way? What's the philosophy?" | [design.md](design.md) |
+| "What PRs landed? In flight? Planned?" | [pr-roadmap.md](pr-roadmap.md) |
+| "Streaming server, `generate_async`, `build_app` routes?" | [streaming-server.md](streaming-server.md) |
+| "How does Dreamverse use FastVideo? What about Dynamo?" | [cross-repo-surfaces.md](cross-repo-surfaces.md) |
+| "NVFP4? Layer profiles? `LinearBase` fallback? AbsMaxFP8?" | [quantization.md](quantization.md) |
+| "Why was decision X made? What's resolved vs. open?" | [decisions-log.md](decisions-log.md) |
+| "What should I work on next? Priority order?" | [open-threads.md](open-threads.md) |
+| "Who should be co-authored on commits in this scope?" | [authors.md](authors.md) |
+| "How do we execute the Dreamverse → FastVideo monorepo merge?" | [integration-plan.md](integration-plan.md) ← **CURRENT** |
+| "Historical drift audit + Option-D evaluation (deprecated by D-18)" | [integration-review.md](integration-review.md) (DEPRECATED) |
+
+## Repo + worktree paths
+
+| Repo | Path | Active branch |
+|---|---|---|
+| FastVideo (public) | `/home/william5lin/FastVideo` | `will/ltx2_sr_port` |
+| Dreamverse | `/home/william5lin/Dreamverse` | `will/integrate-public-fastvideo` |
+| FastVideo-internal (read-only ref) | `/home/william5lin/FastVideo-internal` | their `main` |
+| Dynamo (read-only ref) | `/home/william5lin/dynamo` | upstream |
+
+## Glossary
+
+- **NVFP4**: NVIDIA's specific block-scaled FP4 (e2m1 mantissa, fp32 alpha,
+  `layout_128x4` scale layout, group size 16). Distinct from MX-FP4 / OCP-FP4.
+- **`GeneratorConfig`**: typed init-time public config (model_path, engine,
+  pipeline). Replaces flat `from_pretrained(**kwargs)`.
+- **`GenerationRequest`**: typed per-call request (prompt, inputs, sampling,
+  runtime, output, stage_overrides, state, plan, extensions). Replaces flat
+  `generate_video(**kwargs)`.
+- **`ServeConfig`** / **`RunConfig`**: top-level YAML envelopes. ServeConfig
+  for `fastvideo serve`; RunConfig for offline `fastvideo generate`.
+- **`InferencePreset`**: model-owned named preset (e.g. `ltx2_two_stage`)
+  defining stage topology + per-stage defaults + valid override types.
+- **`ContinuationState`**: opaque round-trip state envelope `{kind, payload}`.
+  Hybrid: server-held for streaming WS, client-round-trip for stateless HTTP.
+- **`generate_async`**: future canonical async exec API (PR 7.10) yielding
+  `VideoProgressEvent` / `VideoPartialEvent` / `VideoFinalEvent`. Substrate
+  for streaming server, OpenAI server, AND Dynamo backend.
+- **`build_app`**: FastAPI app factory in
+  `fastvideo.entrypoints.streaming.server`. Currently exposes only
+  `/health` + `/v1/stream`. FE-required `/healthz`+`/readyz`+`/status`
+  migration is open follow-up #1.
+- **`LLMProvider`**: protocol abstraction for prompt enhancer providers
+  (cerebras, cerebras_ifm, groq). Public schema currently restricts to
+  `Literal["cerebras", "groq"]`; `cerebras_ifm` is internal-only.
+- **`compat.py`**: legacy kwargs translation layer (~370 lines). Scheduled
+  for death across PRs 14-17.
+- **`prepare_for_compile`**: duck-type protocol method called via
+  `getattr(module, "prepare_for_compile", None)` before `torch.compile`.
+  Currently only Gemma3 implements it.
+- **`SubprocessGpuPool`**: PR 7.6 public replacement for the internal
+  `realtime/local_runtime.GPUPool`. Per-GPU subprocess workers, typed
+  `GeneratorConfig` boundary.
+- **PR 5.5**: streaming server subpackage skeleton — adds
+  `fastvideo/entrypoints/streaming/` parallel to `openai/`.
+- **PR 7.10**: the unlock PR. Closes Q-5 (audio re-encode), Q-9 (Dynamo
+  progress), and PR 7.5's mid-segment cancellation TODO simultaneously.
+
+## Live process map (as of 2026-05-03)
+
+| Port | Service | Source |
+|---|---|---|
+| 8009 | `dreamverse-server` | running, `/readyz` 200, 1 warmed GPU worker |
+| 5274 | `next-server` (dev) | running |
+| 8000 | unknown FastAPI | not in handoff — verify before launching new BE |
+
+## How this directory is maintained
+
+- Source of truth for the integration story. Update when state changes.
+- Each file has a "Last updated" header; bump when you edit.
+- Cross-reference siblings via relative links; do NOT duplicate content.
+- New entries: register in `../index.jsonl`.
+- These files supersede the untracked source docs in the repo root and
+  `.agents/exploration/` — see [state.md](state.md) "Untracked but
+  present" section for disposition.
+
+## Source documents (archived 2026-05-03)
+
+The 7 source docs that this directory consolidates have been moved into
+[`source-archive/`](source-archive/). They remain available for agents
+who want the full unsynthesized rationale, but the synthesized memory
+files in this dir are the canonical source of truth.
+
+| Source doc | Lines | Synthesized into |
+|---|---|---|
+| [`source-archive/apirefactor.md`](source-archive/apirefactor.md) | 838 | [design.md](design.md) |
+| [`source-archive/PR-plan.md`](source-archive/PR-plan.md) | 1145 | [pr-roadmap.md](pr-roadmap.md) |
+| [`source-archive/dreamverse_review.md`](source-archive/dreamverse_review.md) | 390 | [state.md](state.md) + [decisions-log.md](decisions-log.md) |
+| [`source-archive/handoff-nvfp4-launch-demo.md`](source-archive/handoff-nvfp4-launch-demo.md) | 518 | [state.md](state.md) + [quantization.md](quantization.md) + [open-threads.md](open-threads.md) |
+| [`source-archive/streaming-server-upstream-plan.md`](source-archive/streaming-server-upstream-plan.md) | 539 | [streaming-server.md](streaming-server.md) + [decisions-log.md](decisions-log.md) |
+| [`source-archive/dreamverse_integration.md`](source-archive/dreamverse_integration.md) | 285 | [cross-repo-surfaces.md](cross-repo-surfaces.md) |
+| [`source-archive/video-generator-config-api-design.md`](source-archive/video-generator-config-api-design.md) | 93 | [design.md](design.md) (early-draft material) |
+| `.agents/exploration/pr-link-review.md` | 29 | already promoted to `.agents/skills/review-pr-link/` (kept in exploration dir) |
+
+See [`source-archive/README.md`](source-archive/README.md) for the
+archive policy.