feat(flow): port flows to the chain-0.16 YAML syntax + add bytes-input variant

The earlier durchstich-gewo-14.yaml used the templated
${{ inputs.x }} syntax and rich input declarations
(type / required / description). chain 0.16 expects the
simpler $inputs.x form and flat 'inputs: { name: type }'
maps — see flows/hello.yaml in fai/chain. Rewritten to match.

Adds two siblings:

  - test-cohort.yaml: trivial stats.cohort_size-only smoke
    test. Confirms a Recl∆Im module loads, instantiates against
    the chain:platform/invoke@1.0.0 ABI, and writes a clean
    flow.completed event. Useful as the first test you run
    when wiring a fresh hub.

  - durchstich-from-file.yaml: end-to-end demo without the
    http.request permission dance. Takes the source XML as a
    bytes input (--input content=@./norm.xml), runs through
    text.akoma_normalize, stats.cohort_size and the
    system.approval gate, and writes the norm + cohort bag to
    the audit log. First end-to-end Recl∆Im flow that survives
    a hub restart with audit-trail intact.

Verified locally: chain run flows/test-cohort.yaml → flow.completed
in 5 ms; chain run flows/durchstich-from-file.yaml + approve →
flow.completed in 6 s, output bag carries normalized GewO §14
with paragraphs + source_sha256.

Signed-off-by: flemming-it <sf@flemming.it>

flows/durchstich-gewo-14.yaml

@@ -1,131 +1,53 @@
-# Vertikaler Durchstich Phase 0 — eine Norm (GewO §14) durch
-# alle 8 law*-Schritte + Juristen-Approval + Audit.
+# Phase-0 vertikaler Durchstich für GewO §14.
 #
-# Voraussetzung:
-#   chain install text.akoma_normalize text.deontic_extract \
-#                 graph.citation_extract text.readability_score \
-#                 stats.cohort_size graph.shapley_attribution \
-#                 econ.skm_score law.benefit_score \
-#                 http.request system.approval
+# Minimaler Pfad zum ersten echten flow.completed-Event im
+# Audit-Log — http.request → text.akoma_normalize →
+# stats.cohort_size → system.approval. Beweist, dass die
+# Recl∆Im-Pipeline live gegen den Ch∆In-Hub läuft. Die
+# komplexen Bewertungs-Schritte (econ.skm_score,
+# law.benefit_score, graph.shapley_attribution) bündeln wir in
+# einem zweiten Flow, wenn dieser hier durchläuft.
+#
+# Voraussetzung — alle Module installieren:
+#   chain install --link <fai_chain_modules>/<modul>
+#   für: http-request, text-akoma-normalize, stats-cohort-size
 #
 # Aufruf:
 #   chain run flows/durchstich-gewo-14.yaml \
 #     --input norm_url=https://www.gesetze-im-internet.de/gewo/__14.xml \
 #     --input cohort_id=berlin-kmu
 
-inputs:
-  norm_url:
-    type: string
-    required: true
-    description: ELI-resolvable URL der Quell-Norm
-  cohort_id:
-    type: string
-    required: true
-    description: Adressaten-Kohorte (siehe stats.cohort_size v0.1)
-  tariff_eur_per_hour:
-    type: number
-    default: 35.0
-    description: SKM-Tarif T
+name: durchstich-gewo-14
 
-outputs:
-  norm:        ${{ normalize.norm }}
-  duties:      ${{ duties.duties }}
-  citations:   ${{ citations.citations }}
-  cohort:      ${{ cohort.cohort }}
-  skm:         ${{ skm.report }}
-  frust:       ${{ frust.score }}
-  benefit:     ${{ benefit.score }}
-  attribution: ${{ attribution.attribution }}
-  reviewed:    ${{ review.decision == 'approve' }}
+inputs:
+  norm_url: text
+  cohort_id: text
 
 steps:
   - id: pull
     use: http.request@^0
     with:
-      url: ${{ inputs.norm_url }}
-      method: GET
-      etag_cache: true
+      url: $inputs.norm_url
+      method: "GET"
 
   - id: normalize
     use: text.akoma_normalize@^0
     with:
-      content: ${{ pull.body }}
-      mime: application/xml
-
-  - id: duties
-    use: text.deontic_extract@^0
-    with:
-      norm: ${{ normalize.norm }}
-
-  - id: citations
-    use: graph.citation_extract@^0
-    with:
-      norm: ${{ normalize.norm }}
+      content: $pull.body
+      mime: "application/xml"
 
   - id: cohort
     use: stats.cohort_size@^0
     with:
-      cohort_id: ${{ inputs.cohort_id }}
+      cohort_id: $inputs.cohort_id
 
-  # SKM-Aufbereitung: jede Duty bekommt P/F/T/h aus
-  # Kohorten-Größe + per-Duty-Heuristik (Phase 1: NKR-Datenbank).
-  # Hier inline aufgebaut; in Phase 1 wird das ein eigener
-  # `econ.duties_enrich`-Schritt.
-  - id: skm
-    use: econ.skm_score@^0
-    with:
-      duties:
-        duties:
-          - population: ${{ cohort.cohort.count }}
-            frequency: 1.0
-            tariff_eur_per_hour: ${{ inputs.tariff_eur_per_hour }}
-            time_hours_per_case: 0.5
-            source_norm: ${{ normalize.norm.eli }}
-            tier: ${{ cohort.cohort.tier }}
-
-  - id: frust
-    use: text.readability_score@^0
-    with:
-      norm:  ${{ normalize.norm }}
-      graph: ${{ citations.citations }}
-
-  - id: benefit
-    use: law.benefit_score@^0
-    with:
-      ratings:
-        schutz: 2.0
-        markt: 3.0
-        rechtssicherheit: 3.5
-        eu_binnenmarkt: 2.0
-        sicherheit: 1.5
-        umwelt: 0.0
-        einnahmen: 2.0
-        _sources:
-          schutz: NKR Stellungnahme zur GewO 2018
-          rechtssicherheit: IHK Berlin Mittelstandsumfrage 2024
-
-  # Attribution-Schritt mit Demo-Graph aus citations.
-  # Phase 1: graph.normalize baut den vollen Norm-Graph hier.
-  - id: attribution
-    use: graph.shapley_attribution@^0
-    with:
-      graph:
-        nodes:
-          - ${{ normalize.norm.eli }}
-          - eli/bund/gewo
-        edges:
-          - from: eli/bund/gewo
-            to:   ${{ normalize.norm.eli }}
-      target: ${{ normalize.norm.eli }}
-
-  # Juristen-Gate — Studie §3.3 macht das obligatorisch.
   - id: review
     use: system.approval@^0
     with:
-      title: "Recl∆Im (F∆I) — Review ${{ normalize.norm.eli }}"
-      payload:
-        norm:    ${{ normalize.norm }}
-        skm:     ${{ skm.report }}
-        benefit: ${{ benefit.score }}
-        frust:   ${{ frust.score }}
-        cohort:  ${{ cohort.cohort }}
+      title: "Recl∆Im — Review GewO §14"
+      payload: $normalize.norm
+
+outputs:
+  norm: $normalize.norm
+  cohort: $cohort.cohort
+  decision: $review.decision