fix(store): dash capability IDs + .chain bundles (chain catalog conformance)

chain's catalog charset (naming.rs check_segment, capability-namespaces.yaml)
allows only [a-z0-9-] per dot-segment — underscores are rejected by
`chain validate`. Repack all 8 modules with the dash capability form
(econ.skm-score, law.benefit-score, …) and align the store index, flows,
app strings and docs to match. Bundles now use the .chain extension
(content-addressed; legacy .fai would still install).

- store/store.yaml: name: dash, wasm_url .chain, refreshed sha256
- store/SHA256.txt: 8 new .chain hashes
- flows + app/lib + RUN.md + MACHBARKEITSSTUDIE.md: capability refs _ -> -
- left untouched: text_akoma_normalize.wasm artifact, DB field skm_score,
  backlog module law.skm_score

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

app/lib/widgets/norm_text_card.dart

@@ -68,7 +68,7 @@ class NormTextCard extends StatelessWidget {
           if (paragraphs.isEmpty)
             Text(
               'Für diese Norm ist noch kein normalisierter Text '
-              'eingebunden. Wenn Ch∆In mit `text.akoma_normalize@^0` '
+              'eingebunden. Wenn Ch∆In mit `text.akoma-normalize@^0` '
               'gegen die Quell-URL läuft, erscheinen die Absätze hier.',
               style: t.bodyLarge?.copyWith(color: ReclaimColors.mute),
             )