chore: remove LLM module + all dependent surfaces (#135)

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, 73 deletions

diff --git a/makima/src/llm/mod.rs b/makima/src/llm/mod.rs
deleted file mode 100644
index 6c9965c..0000000
--- a/makima/src/llm/mod.rs
+++ /dev/null
@@ -1,73 +0,0 @@
-//! LLM integration module for file editing via tool calling.
-
-pub mod claude;
-pub mod contract_evaluator;
-pub mod contract_tools;
-pub mod discuss_tools;
-pub mod groq;
-pub mod markdown;
-pub mod mesh_tools;
-pub mod phase_guidance;
-pub mod task_output;
-pub mod templates;
-pub mod tools;
-pub mod transcript_analyzer;
-
-pub use claude::{ClaudeClient, ClaudeModel};
-pub use contract_tools::{
-    parse_contract_tool_call, ChainedTaskDef, ContractToolExecutionResult, ContractToolRequest,
-    CONTRACT_TOOLS,
-};
-pub use discuss_tools::{
-    parse_discuss_tool_call, DiscussToolExecutionResult, DiscussToolRequest, DISCUSS_TOOLS,
-};
-pub use groq::GroqClient;
-pub use mesh_tools::{parse_mesh_tool_call, MeshToolExecutionResult, MeshToolRequest, MESH_TOOLS};
-pub use phase_guidance::{
-    check_deliverables_met, format_checklist_markdown, generate_deliverable_prompt_guidance,
-    get_next_phase_for_contract, get_phase_checklist_for_type, get_phase_deliverables,
-    get_phase_deliverables_for_type, get_phase_deliverables_with_config, should_auto_progress,
-    AutoProgressAction, AutoProgressDecision, Deliverable, DeliverableCheckResult, DeliverableItem,
-    DeliverablePriority, DeliverableStatus, PhaseChecklist, PhaseDeliverables, TaskInfo, TaskStats,
-};
-pub use task_output::{
-    analyze_task_output, format_parsed_tasks, parse_tasks_from_breakdown, ParsedTask,
-    PhaseImpact, SuggestedAction, TaskOutputAnalysis, TaskParseResult,
-};
-pub use markdown::{body_to_markdown, markdown_to_body};
-pub use templates::{all_contract_types, ContractTypeTemplate};
-pub use tools::{
-    execute_tool_call, Tool, ToolCall, ToolResult, UserAnswer, UserQuestion, VersionToolRequest,
-    AVAILABLE_TOOLS,
-};
-pub use transcript_analyzer::{
-    TranscriptAnalysisResult, ExtractedRequirement, ExtractedDecision,
-    ExtractedActionItem, SpeakerStats, format_transcript_for_analysis,
-    calculate_speaker_stats, build_analysis_prompt, parse_analysis_response,
-};
-pub use contract_evaluator::{
-    ContractEvaluator, ContractEvaluationResult, ContractEvaluatorError,
-};
-
-/// Available LLM providers and models
-#[derive(Debug, Clone, Copy, PartialEq, Eq, Default)]
-pub enum LlmModel {
-    /// Claude Sonnet 4.5 - balanced speed and capability
-    ClaudeSonnet,
-    /// Claude Opus 4.5 (default) - most capable
-    #[default]
-    ClaudeOpus,
-    /// Groq Kimi - fast alternative provider
-    GroqKimi,
-}
-
-impl LlmModel {
-    pub fn from_str(s: &str) -> Option<Self> {
-        match s.to_lowercase().as_str() {
-            "claude-sonnet" | "sonnet" | "claude" => Some(LlmModel::ClaudeSonnet),
-            "claude-opus" | "opus" => Some(LlmModel::ClaudeOpus),
-            "groq" | "kimi" | "groq-kimi" => Some(LlmModel::GroqKimi),
-            _ => None,
-        }
-    }
-}