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, 1 insertions, 10 deletions

diff --git a/makima/src/server/mod.rs b/makima/src/server/mod.rs
index a6c7787..bd48a8f 100644
--- a/makima/src/server/mod.rs
+++ b/makima/src/server/mod.rs
@@ -18,7 +18,7 @@ use tower_http::trace::TraceLayer;
 use utoipa::OpenApi;
 use utoipa_swagger_ui::SwaggerUi;
 
-use crate::server::handlers::{api_keys, chat, daemon_download, directive_documents, directives, file_ws, files, history, listen, mesh, mesh_chat, mesh_daemon, mesh_merge, mesh_supervisor, mesh_ws, orders, repository_history, speak, templates, users, versions};
+use crate::server::handlers::{api_keys, daemon_download, directive_documents, directives, file_ws, files, history, listen, mesh, mesh_daemon, mesh_merge, mesh_supervisor, mesh_ws, orders, repository_history, speak, users, versions};
 use crate::server::openapi::ApiDoc;
 use crate::server::state::SharedState;
 
@@ -55,7 +55,6 @@ pub fn make_router(state: SharedState) -> Router {
                 .put(files::update_file)
                 .delete(files::delete_file),
         )
-        .route("/files/{id}/chat", post(chat::chat_handler))
         .route("/files/{id}/sync-from-repo", post(files::sync_file_from_repo))
         // Version history endpoints
         .route("/files/{id}/versions", get(versions::list_versions))
@@ -88,12 +87,6 @@ pub fn make_router(state: SharedState) -> Router {
         .route("/mesh/tasks/{id}/check-target", post(mesh::check_target_exists))
         .route("/mesh/tasks/{id}/reassign", post(mesh::reassign_task))
         .route("/mesh/tasks/{id}/continue", post(mesh::continue_task))
-        .route("/mesh/chat", post(mesh_chat::mesh_toplevel_chat_handler))
-        .route(
-            "/mesh/chat/history",
-            get(mesh_chat::get_chat_history).delete(mesh_chat::clear_chat_history),
-        )
-        .route("/mesh/tasks/{id}/chat", post(mesh_chat::mesh_chat_handler))
         .route("/mesh/daemons", get(mesh::list_daemons))
         .route("/mesh/daemons/directories", get(mesh::get_daemon_directories))
         .route("/mesh/daemons/{id}", get(mesh::get_daemon))
@@ -279,8 +272,6 @@ pub fn make_router(state: SharedState) -> Router {
         .route("/orders/{id}/convert-to-step", post(orders::convert_to_step))
         // Timeline endpoint (unified history for user)
         .route("/timeline", get(history::get_timeline))
-        // Contract type templates (built-in only)
-        .route("/contract-types", get(templates::list_contract_types))
         // Settings endpoints
         .route(
             "/settings/repository-history",