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/infrastructure/src/tools/mod.rs

@@ -18,7 +18,6 @@
 //! ├── executor.rs  — InfrastructureToolExecutor
 //! ├── fs/          — read, write, edit, delete
 //! ├── git/         — git_operator, git_worktree, git_cred
-//! ├── lsp/         — connect, disconnect, diagnostics, completion, etc.
 //! ├── memory/      — remember, forget, recall
 //! ├── utility/     — cd, dir_list, pong, todowrite, todofinish, etc.
 //! ├── shell.rs     — Bash tool
@@ -41,7 +40,6 @@ pub mod executor;
 pub mod fs;
 pub mod git;
 pub mod graduated;
-pub mod lsp;
 pub mod memory;
 pub mod parallel_delegate;
 pub mod plan;