feat(lessons): add L6 Jaw, Eyes & Face launch lesson (Launch Lessons 5/8 → 6/8)

> **Note:** This PR was created by an AI agent (OpenHands) on behalf of the maintainer. ## Plan Seed the sixth launch lesson (**L6 Kiefer, Augen & Gesicht / Jaw, Eyes & Face**) into the public catalog, advancing Launch Lessons **5/8 → 6/8**. ## Outcome One new `SEED_LESSONS` entry in `src/lib/lessons-catalog.ts` (German, catalog-safe projection), following the deployed L1–L5 pattern. Jaw-safety rails are **executable unit tests**: **Safety rails (banned by test):** wide mouth opening, biting/clenching (`beiss/kneif/zusammenbeissen`), self-massage pressure on the jaw, end-range framing (`maximal`/`bis zum Anschlag`). **Positive guards (required by test):** - Release framed as **allowing, never doing**: tongue invited to become soft and heavy, lips resting slightly apart, teeth may simply not touch. - **Eyes invited to soften/rest** (eyelid like a cloth settling) — never exercised, strained, or hard-focused. - **Imagined yawn** — nur in der Vorstellung, the classic ATM face release. - **Jaw ↔ breath ↔ neck ↔ spine ↔ pelvis** whole-body connection (domain knowledge: the jaw mirrors the pelvic floor). - Tiny amplitudes, imagined movement first-class, reversibility, rest first-class, breath untouched. One wording loop worth noting: "Gespanntsein" (descriptive noticing of tension) tripped the `/spann/` effort-verb guard. Per the iteration-loop principle ("never weaken a test to make it green"), the **content was rephrased** ("hält irgendwo etwas leise fest"), not the guard. ## Impact on release goals Launch Lessons **5/8 → 6/8**. Jaw/eye/face tension is the second-highest vulnerability zone after the neck and a top practical entry topic (screen-time tension); the rails are now permanent CI guards. Onboarding arc: awareness → breath → pelvis → feet/standing → neck → jaw/eyes/face. ## Blackbox - Unit: **198/198 green** (+10 new L6-specific assertions; RED verified first: 7 failed pre-implementation) - TSC: clean - Blackbox suite: unchanged (47/47 on testing; catalog endpoints already covered by tests 2/2a/2b/3) ## Six-perspectives check - [x] Product: sixth launch lesson; face/jaw tension is a highly shareable felt-change topic - [x] Engineering: additive-only diff (1 entry + tests), same pattern as deployed L1–L5 - [x] Psychology: zero failure states; noticing without fixing; rest first-class - [x] Biomechanics: release by allowing (gravity/softening), no force, reversible - [x] Anatomy: jaw–breath–neck–pelvis chain accurate; safety rails enforced by tests - [x] Feldenkrais: no correction/judgement/strain; imagined movement first-class ## Risk Low — additive only, same pattern as L1–L5 which are deployed and green. ## Checklist - [x] Branch off latest `dev` (175eeed) - [x] Conventional Commits (test → feat → docs) - [x] Patchlog entry appended - [x] Roadmap status updated (L6 `[~]`, pending PR) - [x] No secrets / no large binaries

KnallerKalle commented

2026-08-15 10:32:18 +00:00

(Migrated from github.com)

Note: This PR was created by an AI agent (OpenHands) on behalf of the maintainer.

Plan

Seed the sixth launch lesson (L6 Kiefer, Augen & Gesicht / Jaw, Eyes & Face) into the public catalog, advancing Launch Lessons 5/8 → 6/8.

Outcome

One new SEED_LESSONS entry in src/lib/lessons-catalog.ts (German, catalog-safe projection), following the deployed L1–L5 pattern. Jaw-safety rails are executable unit tests:

Safety rails (banned by test): wide mouth opening, biting/clenching (beiss/kneif/zusammenbeissen), self-massage pressure on the jaw, end-range framing (maximal/bis zum Anschlag).

Positive guards (required by test):

Release framed as allowing, never doing: tongue invited to become soft and heavy, lips resting slightly apart, teeth may simply not touch.
Eyes invited to soften/rest (eyelid like a cloth settling) — never exercised, strained, or hard-focused.
Imagined yawn — nur in der Vorstellung, the classic ATM face release.
Jaw ↔ breath ↔ neck ↔ spine ↔ pelvis whole-body connection (domain knowledge: the jaw mirrors the pelvic floor).
Tiny amplitudes, imagined movement first-class, reversibility, rest first-class, breath untouched.

One wording loop worth noting: "Gespanntsein" (descriptive noticing of tension) tripped the /spann/ effort-verb guard. Per the iteration-loop principle ("never weaken a test to make it green"), the content was rephrased ("hält irgendwo etwas leise fest"), not the guard.

Impact on release goals

Launch Lessons 5/8 → 6/8. Jaw/eye/face tension is the second-highest vulnerability zone after the neck and a top practical entry topic (screen-time tension); the rails are now permanent CI guards. Onboarding arc: awareness → breath → pelvis → feet/standing → neck → jaw/eyes/face.

Blackbox

Unit: 198/198 green (+10 new L6-specific assertions; RED verified first: 7 failed pre-implementation)
TSC: clean
Blackbox suite: unchanged (47/47 on testing; catalog endpoints already covered by tests 2/2a/2b/3)

Six-perspectives check

Product: sixth launch lesson; face/jaw tension is a highly shareable felt-change topic
Engineering: additive-only diff (1 entry + tests), same pattern as deployed L1–L5
Psychology: zero failure states; noticing without fixing; rest first-class
Biomechanics: release by allowing (gravity/softening), no force, reversible
Anatomy: jaw–breath–neck–pelvis chain accurate; safety rails enforced by tests
Feldenkrais: no correction/judgement/strain; imagined movement first-class

Risk

Low — additive only, same pattern as L1–L5 which are deployed and green.

Checklist

Branch off latest dev (175eeed)
Conventional Commits (test → feat → docs)
Patchlog entry appended
Roadmap status updated (L6 [~], pending PR)
No secrets / no large binaries

Rows
Columns

feat(lessons): add L6 Jaw, Eyes & Face launch lesson (Launch Lessons 5/8 → 6/8) #79