feat: remove formal/informal LDA analysis from the bicorder (v1.3.0)

The two-family cluster classification is a research finding, not a
diagnostic; embedding it in the tool caused recurring bugs:

- ascii_bicorder.py had an inverted LDA sign (institutional mapped to 9,
  not 1) and a stale term check ('bureaucratic') that silently disabled
  the calculation after the Feb 2026 rename — output was always null
- The web app and Python script had divergent sign conventions and
  divergent version-mismatch behavior (skip vs. continue with stale model)

Changes:
- bicorder.json: drop the formal/informal analysis gradient; version 1.3.0
- ascii_bicorder.py: remove all LDA/model machinery; keep hardness and
  polarization as the only automated analyses
- App.svelte: remove classifier import, model constant, LDA calculation,
  and form-recommendation reactive block; dispatch automated analyses by
  term_left instead of array index
- Delete bicorder-classifier.ts and FormRecommendation.svelte (the latter
  was imported but never rendered)
- AnalysisTransitionBanner: remove recommendation alert and prop; fix
  hardcoded index checks that referenced the removed gradient
- vite.config.ts / vite-env.d.ts: stop loading bicorder_model.json

The cluster classifier lives on as research in analysis/ (scripts and
model untouched there). bicorder.txt regenerated.

bicorder-app/vite.config.ts

@@ -9,11 +9,6 @@ const bicorderData = JSON.parse(
   fs.readFileSync(path.resolve(__dirname, '../bicorder.json'), 'utf-8')
 )
 
-// Read bicorder_model.json at build time
-const bicorderModel = JSON.parse(
-  fs.readFileSync(path.resolve(__dirname, '../analysis/bicorder_model.json'), 'utf-8')
-)
-
 export default defineConfig({
   base: './',
   plugins: [
@@ -61,7 +56,6 @@ export default defineConfig({
     })
   ],
   define: {
-    '__BICORDER_DATA__': JSON.stringify(bicorderData),
-    '__BICORDER_MODEL__': JSON.stringify(bicorderModel)
+    '__BICORDER_DATA__': JSON.stringify(bicorderData)
   }
 })