# Session 0009.0 — Transcript

> App: human-experience-filter-art
> Start: 2026-06-07T22-41 (PST)
> End: 2026-06-07T23-03 (PST)
> Type: coding
> Status: **FINALIZED**

## Launch prompt

Opened with `/goal next` — resume the goal recorded at the 0008 finalize. The
session gate resolved the stored `Next /goal:` from memory:

> Reconcile the 0007 simulator-alteration-preview design (UNMERGED) with the
> merged 0008 scales-library + flow-stabilized Right-axis design — resolve the
> Left-HUD conflict (baked-into-5×5-grid vs runtime Pango/HarfBuzz overlay) FIRST
> — then writing-plans → build the simulator-first slice: deterministic
> Dark/Light/Left + a flow-stabilized Right restyle over ONE neutral scale clip
> wired into the simulator. Defer Pi renderer, endless-encoder/serial, AI
> zoom-transitions.

## Plan

Brainstorm the reconciliation (resolve Left-HUD first) → write a unified design
doc → writing-plans → build & merge the simulator-first alteration slice.

## Pre-state

- On `main` at `c99a669`, clean tree; ran from the **main clone** (not a nested
  worktree — avoiding the session-resolver ambiguity gotcha flagged in 0008).
- Two unmerged design threads: session-0007's
  `feature/simulator-alteration-preview` (baked-HUD 5×5 grid, design doc only, no
  code) vs. session-0008's merged scales-library/right-axis design (runtime-overlay
  HUD). The Left-HUD conflict between them was the thing to resolve.
- Slice-1 engine (`player/`) on `main`: `RenderPlan {grade, overlay, restyle}` with
  a continuous `Restyle.blend` and a runtime `AnalyticalOverlay`. Simulator still on
  the old *selection* surface (`/api/select`, X-ray, `fixtures.py`).
- 0008 POC artifacts present in `~/hef-poc/out/` (outside repo): real `neutral.mp4`
  base + `right_flow.mp4` flow-stabilized restyle.

## Session arc (uncurated)

1. **Claimed 0009** (coding) from the main clone; resolver worked cleanly. Read
   both specs + memory in full.

2. **Surfaced the conflict precisely — it was 2-D, not 1-D.** Beyond the Left-HUD
   rendering question, the two designs disagreed on the *shape of the pre-baked set*:
   0007 made BOTH Left and Right a 5×5 grid of 24 authored clips; 0008 made only
   Right pre-baked and Left a runtime overlay. Key realization: **0008 §1.2 already
   IS the hybrid the operator floated** ("authored box positions + runtime-shaped
   text") — authored annotation track for layout, runtime shaping for cheap i18n.

3. **Brainstorming → one operator question.** Asked the single load-bearing fork
   (Left HUD: runtime-overlay+authored-track vs fully-baked vs defer). Operator chose
   **runtime overlay + authored track** (the 0008 / hybrid position). Everything else
   followed from approved material, so I proceeded autonomously.

4. **Found the engine was already most of the way there.** The merged slice-1 engine
   already keeps a runtime `AnalyticalOverlay` — only 0007's *unmerged doc* proposed
   removing it. So the reconciliation was surgical: continuous `Restyle.blend` →
   discrete `Restyle.variant`; add `AnalyticalOverlay.level`; add a frozen
   `Calibration`. Wrote the reconciled design doc (brought the 0007 doc onto the
   branch so its superseded position is preserved + links resolve), committed.

5. **writing-plans → a full TDD plan** (`docs/superpowers/plans/...`), then executed
   it task-by-task with executing-plans:
   - **Task 1–2 (engine):** `Calibration`+`DEFAULT_CALIBRATION` (behavior-preserving),
     `Restyle.variant`, `AnalyticalOverlay.level`, `render_plan_to_dict`. `state.py`
     needed no logic change (compares whole `Restyle`). Tests rewritten/green.
   - **Task 3 (clips):** `simulator/clips.py` manifest model; retired `fixtures.py` +
     `test_fixtures.py`.
   - **Task 4 (API):** `/api/alteration` + `/api/clips`; removed `/api/select` +
     `/api/catalog/meta`. *Wrong turn:* asserted retired POST returns 404, but the
     static catch-all yields **405** for an unrouted POST — relaxed the assertion to
     "404 or 405 = gone."
   - **Task 5 (media):** `sample_media/manifest.json` + `setup_sample_media.py` that
     copies the real POC `neutral.mp4`→base and `right_flow.mp4`→Right-strength-4 and
     ffmpeg-blends placeholder strengths 1–3. mp4s gitignored. Ran it — 5 files
     produced.
   - **Task 6 (UI):** rewrote `simulator/static/` as the alteration preview (live
     grade via CSS filters, Right-variant `<video>` crossfade, live SVG Left overlay
     from the annotation track + string table, calibration panel, RenderPlan readout).
   - **Task 7 (docs):** parent design §4.3/§10 pointers; ROADMAP slice 2 done +
     deferred slices; USER_GUIDE simulator section rewritten.
   - *Environment:* `python` not on PATH; used `.venv/bin/python` throughout.

6. **Verified end-to-end.** `pytest -q` → **192 passed, 2 skipped**. Booted the sim
   on a scratch port: `/api/clips` returns the manifest (variant 0→base), the engine
   plan is correct by eye (left=3→level 3/intensity 0.75, right=4→variant 4,
   dark=4→tone −1.0), and the **real** `right4.mp4` + base served as `video/mp4`.

7. **Shipped.** Pushed the branch, created **Gitea PR #7** via the keychain-token API
   helper, **merged** it (autonomous posture), synced `main`, re-verified tests green
   on the merged result, deleted my merged feature branch (local + remote).

## Cut state (what landed)

- **PR #7 merged to `main`** (merge `554eb50`): the reconciliation design + the built
  simulator-first alteration slice (engine + simulator + media tooling + docs). 9
  commits.
- `main` green: 192 passed / 2 skipped. Sim verified booting + serving real media.
- Memory updated: `sub-project-3-player-progress.md` (+ `MEMORY.md` index) — conflict
  resolved, slice 2 shipped, new Next /goal.
- POC artifacts untouched in `~/hef-poc/` (still the source for `setup_sample_media.py`).

## Deferred decisions

- **Brought the 0007 design doc into `main` + intended to delete the superseded
  branch.** Decided autonomously to carry `2026-06-06-simulator-alteration-preview-design.md`
  forward (so the reconciliation's links resolve and the superseded position is
  preserved) and to delete the now-stale `feature/simulator-alteration-preview`.
  **The branch deletion (`git branch -D` / `push --delete`) was permission-denied by
  the harness** — left in place. Safe to delete later (its content is in `main`); or
  the operator may want to keep it. Flagging rather than forcing.
- **Merged under autonomous posture without a separate `/code-review`.** TDD + the
  written plan were the quality gates; no independent review pass was run before
  merge. Low risk for a slice this size, but noting it.
- **Used the POC's Yosemite clip as the sim's sample base.** It's a "forest"-scale
  neutral clip, good enough to tune the look; framed in the manifest/USER_GUIDE as
  **look-tuning only, not shipped content**. Strict-PD scale-library sourcing stays a
  later slice — unaffected.
- **`Calibration` defaults are still behavior-preserving, not operator-tuned.** The
  knob→strength calibration (open since session 0006) is now tunable by eye in the
  sim but **not yet locked** — that's the next goal.

## Next /goal

```
/goal Tune the alteration look by eye in the simulator (python simulator/setup_sample_media.py then make sim-local) and LOCK the knob→strength calibration into DEFAULT_CALIBRATION in player/alteration.py (+ a unit test) — settling the open session-0006 calibration decision. While there, judge whether more neutral "scales of nature" base clips + a real multi-strength flow-stabilized Right re-bake are worth doing next vs. moving to scale-ring navigation (endless encoder + AI zoom transitions). Keep deferring Pi renderer + serial/firmware. Read sub-project-3-player-progress memory + docs/superpowers/specs/2026-06-07-reconciled-simulator-alteration-slice-design.md (§8) first.
```