feat: hapus fitur LSP bawaan (language server protocol)

Hapus seluruh pipeline LSP (client, manager, provisioner, dan 7 tool
lsp_*) dari codebase:

- apps/infrastructure/src/lsp/ (client.rs, manager.rs, provisioner/*)
- apps/infrastructure/src/tools/lsp/ (connect, disconnect, diagnostics,
  hover, completion, definition, references)
- ToolCtx/ToolCtxBuilder: hapus field lsp_manager
- Daemon state: hapus lsp_manager, lsp_provision_msgs, shutdown_lsp
- Registry: hapus registrasi 7 tool lsp_*
- Settings: hapus lsp_auto_provision + lsp_languages
- Agent definitions: hapus lsp_* dari allowed tools coder/reviewer
- Cargo: hapus dependency lsp-types (workspace + infra)
- Update dokumentasi mod + arch_audit forbidden list

Verifikasi: cargo check/clippy/test semua hijau (54 test), tidak ada
referensi lsp_* tersisa di luar CHANGELOG.

apps/domain/src/cms/settings.rs

@@ -18,7 +18,6 @@
 //! - `workflow_max_concurrency` — max parallel hive-mind nodes
 //! - `hive_mind_node_timeout_ms` — per-node timeout for hive-mind orchestration
 //! - `flags` — grouped boolean feature toggles
-//! - `lsp_languages` — list of language IDs for LSP auto-provisioning
 
 use std::collections::HashMap;
 
@@ -49,12 +48,10 @@ pub enum InternetMode {
 /// ## Fields
 /// - `review_enabled` — enable automatic inline review after edits
 /// - `session_archive_enabled` — enable periodic session archiving
-/// - `lsp_auto_provision` — auto-provision LSP language servers on project open
 #[derive(Debug, Clone, Serialize, Deserialize)]
 pub struct SettingsFlags {
     pub review_enabled: bool,
     pub session_archive_enabled: bool,
-    pub lsp_auto_provision: bool,
 }
 
 impl Default for SettingsFlags {
@@ -63,7 +60,6 @@ impl Default for SettingsFlags {
         Self {
             review_enabled: true,
             session_archive_enabled: true,
-            lsp_auto_provision: true,
         }
     }
 }
@@ -93,7 +89,6 @@ pub struct Settings {
     pub workflow_max_concurrency: usize,
     #[serde(flatten)]
     pub flags: SettingsFlags,
-    pub lsp_languages: Vec<String>,
     #[serde(default = "default_hive_mind_node_timeout_ms")]
     pub hive_mind_node_timeout_ms: u64,
 }
@@ -113,7 +108,6 @@ impl Default for Settings {
             verify_timeout_ms: 30_000,
             workflow_max_concurrency: 5,
             flags: SettingsFlags::default(),
-            lsp_languages: Vec::new(),
             hive_mind_node_timeout_ms: 600_000,
         }
     }