chore: remove LLM module + all dependent surfacesremove-llm

Wholesale removal of the LLM integration layer. ~14,200 LOC deleted
across backend and frontend. All chat-driven UIs go with it.

## Backend
- Delete `src/llm/` (7,400 LOC): claude/groq clients, contract_tools,
  contract_evaluator, discuss_tools, mesh_tools, phase_guidance,
  task_output, templates, markdown round-trip, tools, transcript_analyzer.
- Delete handlers wholly dependent on LLM:
  - `chat.rs` (file-level LLM chat at /files/{id}/chat)
  - `mesh_chat.rs` (mesh & task LLM chat + history)
  - `templates.rs` (/contract-types listing)
- Strip LLM uses from `mesh_daemon.rs`:
  - `compute_action_directive` (used phase_guidance::check_deliverables_met
    to nudge supervisors with "all tasks done" messages). The auto-PR
    path below still fires when all tasks finish, so no behaviour lost.
  - `crate::llm::markdown_to_body` → inline 1-line replacement that
    wraps markdown content in a single BodyElement::Markdown. The
    editor re-parses on display, so round-trip is preserved.
- Drop routes: /files/{id}/chat, /mesh/chat, /mesh/chat/history,
  /mesh/tasks/{id}/chat, /contract-types.
- Drop the matching openapi registrations.

## Frontend
- Delete components that were LLM-only:
  - `mesh/UnifiedMeshChatInput.tsx`
  - `listen/DiscussContractModal.tsx`
  - `listen/TranscriptAnalysisPanel.tsx`
  - `listen/ContractPickerModal.tsx`
  - `files/CliInput.tsx`
- Delete the entire /listen page (its primary value-add was
  voice → LLM analysis → contract creation; without LLM the page is
  just a transcript display with no obvious user purpose).
- Delete `hooks/useMeshChatHistory.ts` and `lib/listenApi.ts`
  (transcript-analysis API client to the already-Phase-5-removed
  listen handlers).
- Strip api.ts of LLM exports: LlmModel, ChatMessage/Request/Response,
  UserQuestion/Answer, chatWithFile, MeshChat* types & functions,
  getMeshChatHistory, clearMeshChatHistory, chatWithMeshContext,
  ContractTypeTemplate, listContractTypes, chatWithContract,
  getContractChatHistory, clearContractChatHistory, discussContract,
  PhaseDefinition, DeliverableDefinition.
- mesh.tsx: drop UnifiedMeshChatInput render + the chatContext memo +
  handleTaskUpdatedFromCli (only consumer was the input).
- files.tsx: drop CliInput render + handleGenerateFromElement +
  handleBodyUpdate + handleClearFocus + suggestedPrompt state (all
  CliInput-only).
- NavStrip: drop the /listen link.
- main.tsx: drop the /listen route.

## Net diff: 37 files changed, 58 insertions, 14,281 deletions.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

1 files changed, 0 insertions, 97 deletions

diff --git a/makima/src/llm/contract_evaluator.rs b/makima/src/llm/contract_evaluator.rs
deleted file mode 100644
index e63bbfa..0000000
--- a/makima/src/llm/contract_evaluator.rs
+++ /dev/null
@@ -1,97 +0,0 @@
-//! Contract Evaluator - LLM-based evaluation of completed contracts against directive.
-//!
-//! This module will be reimplemented as part of the directive verification engine.
-//! See the orchestration module for the new evaluation system.
-//!
-//! The new evaluation system will provide:
-//! - Tiered verification (programmatic verifiers first, then LLM evaluation)
-//! - Composite confidence scoring (weighted combination of results)
-//! - Pluggable verifier interface (test runner, linter, build, type checker)
-//! - Proper integration with the directive chain steps
-
-use serde::{Deserialize, Serialize};
-use sqlx::PgPool;
-use uuid::Uuid;
-
-// use crate::db::models::{Contract, DirectiveAcceptanceCriterion, DirectiveRequirement};
-
-/// Result of contract evaluation
-#[derive(Debug, Clone, Serialize, Deserialize)]
-#[serde(rename_all = "camelCase")]
-pub struct ContractEvaluationResult {
-    /// Whether the contract passed evaluation
-    pub passed: bool,
-    /// Overall score from 0.0 to 1.0
-    pub overall_score: f64,
-    /// Results for each acceptance criterion
-    pub criteria_results: Vec<EvaluationCriterionResultLegacy>,
-    /// Summary feedback from the evaluator
-    pub summary_feedback: String,
-    /// Instructions for rework if failed
-    pub rework_instructions: Option<String>,
-}
-
-/// Per-criterion evaluation result (legacy - kept for compatibility)
-#[derive(Debug, Clone, Serialize, Deserialize)]
-#[serde(rename_all = "camelCase")]
-pub struct EvaluationCriterionResultLegacy {
-    pub criterion_id: String,
-    pub criterion_text: String,
-    pub passed: bool,
-    /// Score (0.0-1.0)
-    pub score: f64,
-    pub feedback: String,
-    /// Evidence supporting the evaluation
-    pub evidence: Vec<String>,
-}
-
-/// File content for evaluation context
-#[derive(Debug, Clone)]
-pub struct FileContent {
-    pub path: String,
-    pub content: String,
-}
-
-/// Contract evaluator for LLM-based assessment.
-///
-/// NOTE: This is a stub implementation. The full evaluation system will be
-/// implemented as part of the orchestration/verifier module.
-pub struct ContractEvaluator {
-    _pool: PgPool,
-}
-
-impl ContractEvaluator {
-    /// Create a new contract evaluator.
-    pub fn new(pool: PgPool) -> Self {
-        Self { _pool: pool }
-    }
-
-    /// Evaluate a contract - stub implementation.
-    ///
-    /// This will be reimplemented in the orchestration module with:
-    /// - Programmatic verification (tests, lint, build)
-    /// - LLM evaluation
-    /// - Composite scoring
-    pub async fn evaluate_contract(
-        &self,
-        _contract_id: Uuid,
-    ) -> Result<ContractEvaluationResult, ContractEvaluatorError> {
-        // TODO: Implement using the new directive evaluation system
-        Err(ContractEvaluatorError::NotImplemented(
-            "Contract evaluator will be reimplemented with directive system".to_string(),
-        ))
-    }
-}
-
-/// Error types for contract evaluation.
-#[derive(Debug, thiserror::Error)]
-pub enum ContractEvaluatorError {
-    #[error("Database error: {0}")]
-    Database(#[from] sqlx::Error),
-
-    #[error("LLM error: {0}")]
-    Llm(String),
-
-    #[error("Not implemented: {0}")]
-    NotImplemented(String),
-}