refactor(tui): address reviewer findings

- Remove unused color-eyre dependency.
- Eliminate duplicate ToolRegistry: extract create_tool_registry()
  helper, remove unused tools param from run_tui.
- Remove show_thinking from agent_turn/stream_response (now handled
  by the sink).
- Take user_rx by value in agent_loop_task (sole consumer).
- Fix #[expect] reason strings to describe current state, not future
  plans (project convention).
- Update stale tool.rs exit_code expect reason.
- Update CLAUDE.md crate structure with tui/ modules.
- Update roadmap.md with shipped TUI foundation.

Author: hakula139

CLAUDE.md

@@ -31,20 +31,32 @@ ox     # Start an interactive session
 ├── config/
 │   ├── file.rs                 # TOML config file discovery, parsing, and merge (user + project)
 │   └── oauth.rs                # Claude Code OAuth credentials (macOS Keychain + file), token refresh, file locking
-├── main.rs                     # CLI entry point, agent loop, async REPL
+├── main.rs                     # CLI entry point, agent loop, TUI / REPL / headless dispatch
 ├── message.rs                  # Conversation message types
 ├── prompt.rs                   # System prompt builder (section assembly, static content)
 ├── prompt/
 │   ├── environment.rs          # Runtime environment detection (platform, git, date)
 │   └── instructions.rs         # Instruction file discovery and loading (CLAUDE.md, AGENTS.md)
 ├── tool.rs                     # Tool trait, registry, definitions
-└── tool/
-    ├── bash.rs                 # Shell command execution with timeout
-    ├── edit.rs                 # Exact string replacement in files
-    ├── glob.rs                 # File pattern matching (glob)
-    ├── grep.rs                 # Content search via regex
-    ├── read.rs                 # File reading with line numbers and pagination
-    └── write.rs                # File writing with directory creation
+├── tool/
+│   ├── bash.rs                 # Shell command execution with timeout
+│   ├── edit.rs                 # Exact string replacement in files
+│   ├── glob.rs                 # File pattern matching (glob)
+│   ├── grep.rs                 # Content search via regex
+│   ├── read.rs                 # File reading with line numbers and pagination
+│   └── write.rs                # File writing with directory creation
+├── tui.rs                      # TUI module root
+└── tui/
+    ├── app.rs                  # Root App struct, tokio::select! event loop, render dispatch
+    ├── component.rs            # Component trait and Action enum
+    ├── components.rs           # Components module root
+    ├── components/
+    │   ├── chat.rs             # Scrollable chat message list with streaming buffer
+    │   ├── input.rs            # Single-line input area with cursor navigation
+    │   └── status.rs           # Status bar (model, status indicator)
+    ├── event.rs                # AgentEvent, UserAction, AgentSink trait, ChannelSink, StdioSink
+    ├── terminal.rs             # Terminal init / restore, synchronized output, panic hook
+    └── theme.rs                # Catppuccin Mocha palette, style helpers
 ```
 
 ## Coding Conventions

Cargo.lock

@@ -19,7 +19,6 @@ pedantic = { level = "warn", priority = -1 }
 anyhow = "1"
 clap = { version = "4", features = ["derive"] }
 crossterm = { version = "0.29", features = ["event-stream"] }
-color-eyre = "0.6"
 dirs = "6"
 futures = "0.3"
 globset = "0.4"

Cargo.toml

@@ -15,7 +15,6 @@ workspace = true
 [dependencies]
 anyhow.workspace = true
 clap.workspace = true
-color-eyre.workspace = true
 crossterm.workspace = true
 dirs.workspace = true
 futures.workspace = true