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.txt

@@ -39,7 +39,6 @@ self-enforcing < [---------] > enforced
                    ANALYSIS                  
       hardness < [---------] > softness      
      polarized < [---------] > centrist      
-        formal < [---------] > informal      
     not useful < [---------] > very useful   
 
                    GLOSSARY                  
@@ -64,12 +63,10 @@ self-enforcing < [---------] > enforced
 | explicit       | Design is stated explicitly somewhere that is accessible to participants |
 | exposed        | Weak boundaries and vulnerable to external influence |
 | flocking       | Coordination occurs through centralized direction or direct mimicry |
-| formal         | Exhibits bureaucratic characteristics with centralized control and predictable enforcement |
 | hardness       | The protocol tends toward properties characterized by hardness |
 | implicit       | Design is not stated explicitly and is learned by use |
 | inclusion      | Reduces barriers and includes diverse participants |
-| informal       | Exhibits relational characteristics with distributed coordination embedded in culture |
-| institutional  | Design occurs through processes controlled by powerful institutions |
+| institutional  | Design occurs through processes controlled by particular institutions |
 | interpretive   | Ambiguous design, allowing participants a wide range of interpretation |
 | liberating     | Enables participants to carry out desired activities with less work or thought |
 | limited        | Does not, on its own, adequately meet the needs and goals of participants |