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/commands.rs

@@ -46,10 +46,6 @@ pub struct SettingsPatch {
     pub review_enabled: Option<bool>,
     /// Override the session-archive-enabled flag.
     pub session_archive_enabled: Option<bool>,
-    /// Override the LSP auto-provision flag.
-    pub lsp_auto_provision: Option<bool>,
-    /// Override the list of LSP-managed languages.
-    pub lsp_languages: Option<Vec<String>>,
     /// Override the hive-mind node timeout in milliseconds.
     pub hive_mind_node_timeout_ms: Option<u64>,
 }
@@ -111,12 +107,6 @@ impl SettingsPatch {
         if let Some(val) = self.session_archive_enabled {
             settings.flags.session_archive_enabled = val;
         }
-        if let Some(val) = self.lsp_auto_provision {
-            settings.flags.lsp_auto_provision = val;
-        }
-        if let Some(ref val) = self.lsp_languages {
-            settings.lsp_languages = val.clone();
-        }
         if let Some(val) = self.hive_mind_node_timeout_ms {
             settings.hive_mind_node_timeout_ms = val;
         }