feat(cli): shorten file paths in tool output display

Add three-level path shortening hierarchy for cleaner CLI output:
1. Project path -> <project_name>/... (when project loaded via /project)
2. Workspace path -> ./... (relative to current working directory)
3. Home path -> ~/... (fallback for paths under home directory)

Changes:
- Add shorten_path() and shorten_paths_in_command() functions in display.rs
- Add project_path/project_name fields to ConsoleUiWriter
- Add set_workspace_path(), set_project_path(), clear_project() to UiWriter trait
- Add ui_writer() getter to Agent struct
- Wire up project path setting in /project and /unproject commands
- Set workspace path when creating agents in all CLI modes

Before: ● read_file | /Users/dhanji/icloud/butler/projects/appa_estate/status.md
After:  ● read_file | appa_estate/status.md (with project loaded)
        ● read_file | ./src/main.rs (workspace-relative)
        ● read_file | ~/Documents/file.txt (home-relative)

crates/g3-cli/src/accumulative.rs

@@ -15,6 +15,7 @@ use crate::cli_args::Cli;
 use crate::interactive::run_interactive;
 use crate::simple_output::SimpleOutput;
 use crate::ui_writer_impl::ConsoleUiWriter;
+use g3_core::ui_writer::UiWriter;
 use crate::utils::load_config_with_cli_overrides;
 
 /// Run accumulative autonomous mode - accumulates requirements from user input
@@ -153,6 +154,7 @@ pub async fn run_accumulative_mode(
 
                 // Create agent for this autonomous run
                 let ui_writer = ConsoleUiWriter::new();
+                ui_writer.set_workspace_path(workspace_dir.clone());
                 let agent = Agent::new_autonomous_with_readme_and_quiet(
                     config.clone(),
                     ui_writer,
@@ -284,6 +286,7 @@ async fn handle_command(
 
             // Create agent for interactive mode with requirements context
             let ui_writer = ConsoleUiWriter::new();
+            ui_writer.set_workspace_path(workspace_dir.clone());
             let agent = Agent::new_with_readme_and_quiet(
                 config,
                 ui_writer,

crates/g3-cli/src/agent_mode.rs

@@ -175,6 +175,7 @@ pub async fn run_agent_mode(
     let ui_writer = ConsoleUiWriter::new();
     // Set agent mode on UI writer for visual differentiation (light gray tool names)
     ui_writer.set_agent_mode(true);
+    ui_writer.set_workspace_path(workspace_dir.clone());
     let mut agent =
         Agent::new_with_custom_prompt(config, ui_writer, system_prompt, combined_content.clone()).await?;
 

crates/g3-cli/src/autonomous.rs

@@ -14,6 +14,7 @@ use crate::coach_feedback;
 use crate::metrics::{format_elapsed_time, generate_turn_histogram, TurnMetrics};
 use crate::simple_output::SimpleOutput;
 use crate::ui_writer_impl::ConsoleUiWriter;
+use g3_core::ui_writer::UiWriter;
 
 /// Run autonomous mode with coach-player feedback loop (console output).
 pub async fn run_autonomous(
@@ -498,6 +499,7 @@ async fn execute_coach_turn(
     crate::filter_json::reset_json_tool_state();
 
     let ui_writer = ConsoleUiWriter::new();
+    ui_writer.set_workspace_path(project.workspace().to_path_buf());
     let mut coach_agent =
         match Agent::new_autonomous_with_readme_and_quiet(coach_config, ui_writer, None, quiet)
             .await

crates/g3-cli/src/commands.rs

@@ -360,6 +360,14 @@ pub async fn handle_command<W: UiWriter>(
                     Some(project) => {
                         // Set project content in agent's system message
                         if agent.set_project_content(Some(project.content.clone())) {
+                            // Set project path on UI writer for path shortening
+                            let project_name = project.path
+                                .file_name()
+                                .and_then(|n| n.to_str())
+                                .unwrap_or("project")
+                                .to_string();
+                            agent.ui_writer().set_project_path(project.path.clone(), project_name);
+
                             // Print loaded status
                             print!(
                                 "{}Project loaded:{} {}\n",
@@ -388,6 +396,7 @@ pub async fn handle_command<W: UiWriter>(
         "/unproject" => {
             if active_project.is_some() {
                 agent.clear_project_content();
+                agent.ui_writer().clear_project();
                 *active_project = None;
                 output.print("✅ Project unloaded. Context reset to original system message.");
             } else {

crates/g3-cli/src/display.rs

@@ -17,6 +17,83 @@ pub fn format_workspace_path(workspace_path: &Path) -> String {
         .unwrap_or(path_str)
 }
 
+/// Shorten a path string for display by:
+/// 1. Replacing project directory prefix with `<project_name>/` (if project is active)
+/// 2. Replacing workspace directory prefix with `./`
+/// 3. Replacing home directory prefix with `~`
+///
+/// This is useful for tool output where paths should be concise.
+/// The project check happens first (most specific), then workspace, then home.
+pub fn shorten_path(path: &str, workspace_path: Option<&std::path::Path>, project: Option<(&std::path::Path, &str)>) -> String {
+    // First, try to make it relative to project (most specific)
+    if let Some((project_path, project_name)) = project {
+        let project_str = project_path.display().to_string();
+        if let Some(relative) = path.strip_prefix(&project_str) {
+            // Handle both "/subpath" and "" (exact match) cases
+            if relative.is_empty() {
+                return format!("{}/", project_name);
+            } else if let Some(stripped) = relative.strip_prefix('/') {
+                return format!("{}/{}", project_name, stripped);
+            }
+        }
+    }
+
+    // First, try to make it relative to workspace
+    if let Some(workspace) = workspace_path {
+        let workspace_str = workspace.display().to_string();
+        if let Some(relative) = path.strip_prefix(&workspace_str) {
+            // Handle both "/subpath" and "" (exact match) cases
+            if relative.is_empty() {
+                return "./".to_string();
+            } else if let Some(stripped) = relative.strip_prefix('/') {
+                return format!("./{}", stripped);
+            }
+        }
+    }
+
+    // Fall back to replacing home directory with ~
+    if let Some(home) = dirs::home_dir() {
+        let home_str = home.display().to_string();
+        if let Some(relative) = path.strip_prefix(&home_str) {
+            return format!("~{}", relative);
+        }
+    }
+
+    path.to_string()
+}
+
+/// Shorten any paths found within a shell command string.
+/// This replaces project paths with `<project_name>/`, workspace paths with `./`, and home paths with `~`.
+pub fn shorten_paths_in_command(command: &str, workspace_path: Option<&std::path::Path>, project: Option<(&std::path::Path, &str)>) -> String {
+    let mut result = command.to_string();
+
+    // First, replace project paths (most specific)
+    if let Some((project_path, project_name)) = project {
+        let project_str = project_path.display().to_string();
+        // Replace project path followed by / with project_name/
+        result = result.replace(&format!("{}/", project_str), &format!("{}/", project_name));
+        // Replace exact project path
+        result = result.replace(&project_str, project_name);
+    }
+
+    // Then, replace workspace paths
+    if let Some(workspace) = workspace_path {
+        let workspace_str = workspace.display().to_string();
+        // Replace workspace path followed by / with ./
+        result = result.replace(&format!("{}/", workspace_str), "./");
+        // Replace exact workspace path at word boundary
+        result = result.replace(&workspace_str, ".");
+    }
+
+    // Then replace home directory paths
+    if let Some(home) = dirs::home_dir() {
+        let home_str = home.display().to_string();
+        result = result.replace(&home_str, "~");
+    }
+
+    result
+}
+
 /// Print the workspace path in a consistent format.
 pub fn print_workspace_path(workspace_path: &Path) {
     let display = format_workspace_path(workspace_path);
@@ -195,4 +272,91 @@ mod tests {
         };
         assert!(with_readme.has_any());
     }
+
+    #[test]
+    fn test_shorten_path_workspace_relative() {
+        let workspace = PathBuf::from("/Users/test/projects/myapp");
+        let path = "/Users/test/projects/myapp/src/main.rs";
+        let shortened = shorten_path(path, Some(&workspace), None);
+        assert_eq!(shortened, "./src/main.rs");
+    }
+
+    #[test]
+    fn test_shorten_path_workspace_exact() {
+        let workspace = PathBuf::from("/Users/test/projects/myapp");
+        let path = "/Users/test/projects/myapp";
+        let shortened = shorten_path(path, Some(&workspace), None);
+        assert_eq!(shortened, "./");
+    }
+
+    #[test]
+    fn test_shorten_path_home_relative() {
+        // This test depends on having a home directory
+        if let Some(home) = dirs::home_dir() {
+            let path = format!("{}/other/project/file.rs", home.display());
+            let shortened = shorten_path(&path, None, None);
+            assert_eq!(shortened, "~/other/project/file.rs");
+        }
+    }
+
+    #[test]
+    fn test_shorten_path_no_match() {
+        let workspace = PathBuf::from("/Users/test/projects/myapp");
+        let path = "/tmp/other/file.rs";
+        let shortened = shorten_path(path, Some(&workspace), None);
+        assert_eq!(shortened, "/tmp/other/file.rs");
+    }
+
+    #[test]
+    fn test_shorten_path_project_relative() {
+        let workspace = PathBuf::from("/Users/test/projects");
+        let project_path = PathBuf::from("/Users/test/projects/appa_estate");
+        let path = "/Users/test/projects/appa_estate/status.md";
+        let shortened = shorten_path(path, Some(&workspace), Some((&project_path, "appa_estate")));
+        assert_eq!(shortened, "appa_estate/status.md");
+    }
+
+    #[test]
+    fn test_shorten_path_project_takes_priority() {
+        // Project path is under workspace, but project shortening should take priority
+        let workspace = PathBuf::from("/Users/test/projects");
+        let project_path = PathBuf::from("/Users/test/projects/appa_estate");
+        let path = "/Users/test/projects/appa_estate/src/main.rs";
+        let shortened = shorten_path(path, Some(&workspace), Some((&project_path, "appa_estate")));
+        assert_eq!(shortened, "appa_estate/src/main.rs");
+    }
+
+    #[test]
+    fn test_shorten_paths_in_command_workspace() {
+        let workspace = PathBuf::from("/Users/test/projects/myapp");
+        let command = "cat /Users/test/projects/myapp/src/main.rs";
+        let shortened = shorten_paths_in_command(command, Some(&workspace), None);
+        assert_eq!(shortened, "cat ./src/main.rs");
+    }
+
+    #[test]
+    fn test_shorten_paths_in_command_home() {
+        if let Some(home) = dirs::home_dir() {
+            let command = format!("ls {}/Documents", home.display());
+            let shortened = shorten_paths_in_command(&command, None, None);
+            assert_eq!(shortened, "ls ~/Documents");
+        }
+    }
+
+    #[test]
+    fn test_shorten_paths_in_command_multiple() {
+        let workspace = PathBuf::from("/Users/test/projects/myapp");
+        let command = "diff /Users/test/projects/myapp/a.rs /Users/test/projects/myapp/b.rs";
+        let shortened = shorten_paths_in_command(command, Some(&workspace), None);
+        assert_eq!(shortened, "diff ./a.rs ./b.rs");
+    }
+
+    #[test]
+    fn test_shorten_paths_in_command_project() {
+        let workspace = PathBuf::from("/Users/test/projects");
+        let project_path = PathBuf::from("/Users/test/projects/appa_estate");
+        let command = "cat /Users/test/projects/appa_estate/status.md";
+        let shortened = shorten_paths_in_command(command, Some(&workspace), Some((&project_path, "appa_estate")));
+        assert_eq!(shortened, "cat appa_estate/status.md");
+    }
 }

crates/g3-cli/src/lib.rs

@@ -42,6 +42,7 @@ use interactive::run_interactive;
 use project_files::{combine_project_content, read_agents_config, read_include_prompt, read_workspace_memory, read_project_readme};
 use simple_output::SimpleOutput;
 use ui_writer_impl::ConsoleUiWriter;
+use g3_core::ui_writer::UiWriter;
 use utils::{initialize_logging, load_config_with_cli_overrides, setup_workspace_directory};
 use template::process_template;
 
@@ -167,6 +168,7 @@ async fn run_console_mode(
     }
 
     let ui_writer = ConsoleUiWriter::new();
+    ui_writer.set_workspace_path(workspace_dir.clone());
 
     let mut agent = if cli.autonomous {
         Agent::new_autonomous_with_readme_and_quiet(

crates/g3-cli/src/ui_writer_impl.rs

@@ -1,4 +1,5 @@
 use crate::filter_json::{filter_json_tool_calls, reset_json_tool_state, ToolParsingHint};
+use crate::display::{shorten_path, shorten_paths_in_command};
 use crate::streaming_markdown::StreamingMarkdownFormatter;
 use g3_core::ui_writer::UiWriter;
 use std::io::{self, Write};
@@ -137,6 +138,12 @@ impl ParsingHintState {
 pub struct ConsoleUiWriter {
     current_tool_name: std::sync::Mutex<Option<String>>,
     current_tool_args: std::sync::Mutex<Vec<(String, String)>>,
+    /// Workspace path for shortening displayed paths
+    workspace_path: std::sync::Mutex<Option<std::path::PathBuf>>,
+    /// Project path for shortening displayed paths (takes priority over workspace)
+    project_path: std::sync::Mutex<Option<std::path::PathBuf>>,
+    /// Project name for display (e.g., "appa_estate")
+    project_name: std::sync::Mutex<Option<String>>,
     current_output_line: std::sync::Mutex<Option<String>>,
     output_line_printed: std::sync::Mutex<bool>,
     /// Track if we're in shell compact mode (for appending timing to output line)
@@ -191,6 +198,9 @@ impl ConsoleUiWriter {
         Self {
             current_tool_name: std::sync::Mutex::new(None),
             current_tool_args: std::sync::Mutex::new(Vec::new()),
+            workspace_path: std::sync::Mutex::new(None),
+            project_path: std::sync::Mutex::new(None),
+            project_name: std::sync::Mutex::new(None),
             current_output_line: std::sync::Mutex::new(None),
             output_line_printed: std::sync::Mutex::new(false),
             is_shell_compact: std::sync::Mutex::new(false),
@@ -201,6 +211,18 @@ impl ConsoleUiWriter {
     }
 }
 
+impl ConsoleUiWriter {
+    fn get_workspace_path(&self) -> Option<std::path::PathBuf> {
+        self.workspace_path.lock().unwrap().clone()
+    }
+
+    fn get_project_info(&self) -> Option<(std::path::PathBuf, String)> {
+        let path = self.project_path.lock().unwrap().clone()?;
+        let name = self.project_name.lock().unwrap().clone()?;
+        Some((path, name))
+    }
+}
+
 impl UiWriter for ConsoleUiWriter {
     fn print(&self, message: &str) {
         print!("{}", message);
@@ -308,17 +330,28 @@ impl UiWriter for ConsoleUiWriter {
                 // For multi-line values, only show the first line
                 let first_line = value.lines().next().unwrap_or("");
 
-                // Truncate long values for display
-                let display_value = if first_line.len() > 80 {
+                // Get workspace path for shortening
+                let workspace = self.get_workspace_path();
+                let workspace_ref = workspace.as_deref();
+                
+                // Get project info for shortening
+                let project_info = self.get_project_info();
+                let project_ref = project_info.as_ref().map(|(p, n)| (p.as_path(), n.as_str()));
+
+                // Shorten paths in the value (handles both file paths and shell commands)
+                let shortened = shorten_paths_in_command(first_line, workspace_ref, project_ref);
+
+                // Truncate long values for display (after shortening)
+                let display_value = if shortened.chars().count() > 80 {
                     // Use char_indices to safely truncate at character boundary
-                    let truncate_at = first_line
+                    let truncate_at = shortened
                         .char_indices()
                         .nth(77)
                         .map(|(i, _)| i)
-                        .unwrap_or(first_line.len());
-                    format!("{}...", &first_line[..truncate_at])
+                        .unwrap_or(shortened.len());
+                    format!("{}...", &shortened[..truncate_at])
                 } else {
-                    first_line.to_string()
+                    shortened
                 };
 
                 // Add range information for read_file tool calls
@@ -500,16 +533,21 @@ impl UiWriter for ConsoleUiWriter {
                 String::new()
             }
         } else {
-            // Truncate long paths
-            if file_path.len() > 60 {
-                let truncate_at = file_path
+            // Shorten path (project -> name/, workspace -> ./, home -> ~) then truncate if still long
+            let workspace = self.get_workspace_path();
+            let project_info = self.get_project_info();
+            let project_ref = project_info.as_ref().map(|(p, n)| (p.as_path(), n.as_str()));
+            let shortened = shorten_path(file_path, workspace.as_deref(), project_ref);
+            
+            if shortened.chars().count() > 60 {
+                let truncate_at = shortened
                     .char_indices()
                     .nth(57)
                     .map(|(i, _)| i)
-                    .unwrap_or(file_path.len());
-                format!("{}", &file_path[..truncate_at])
+                    .unwrap_or(shortened.len());
+                format!("{}...", &shortened[..truncate_at])
             } else {
-                file_path.to_string()
+                shortened
             }
         };
 
@@ -806,4 +844,18 @@ impl UiWriter for ConsoleUiWriter {
     fn set_agent_mode(&self, is_agent_mode: bool) {
         self.hint_state.is_agent_mode.store(is_agent_mode, Ordering::Relaxed);
     }
+
+    fn set_workspace_path(&self, path: std::path::PathBuf) {
+        *self.workspace_path.lock().unwrap() = Some(path);
+    }
+
+    fn set_project_path(&self, path: std::path::PathBuf, name: String) {
+        *self.project_path.lock().unwrap() = Some(path);
+        *self.project_name.lock().unwrap() = Some(name);
+    }
+
+    fn clear_project(&self) {
+        *self.project_path.lock().unwrap() = None;
+        *self.project_name.lock().unwrap() = None;
+    }
 }

crates/g3-core/src/lib.rs

@@ -1055,6 +1055,11 @@ impl<W: UiWriter> Agent<W> {
         &self.context_window
     }
 
+    /// Get a reference to the UI writer.
+    pub fn ui_writer(&self) -> &W {
+        &self.ui_writer
+    }
+
     /// Add a message directly to the context window.
     /// Used for injecting discovery messages before the first LLM turn.
     pub fn add_message_to_context(&mut self, message: Message) {

crates/g3-core/src/ui_writer.rs

@@ -126,6 +126,20 @@ pub trait UiWriter: Send + Sync {
     /// When in agent mode, tool names may be displayed differently (e.g., different color).
     /// Default implementation does nothing.
     fn set_agent_mode(&self, _is_agent_mode: bool) {}
+
+    /// Set the workspace path for shortening displayed paths.
+    /// Paths under this directory will be shown as `./relative/path`.
+    /// Default implementation does nothing.
+    fn set_workspace_path(&self, _path: std::path::PathBuf) {}
+
+    /// Set the active project path and name for shortening displayed paths.
+    /// Paths under this directory will be shown as `<project_name>/relative/path`.
+    /// Default implementation does nothing.
+    fn set_project_path(&self, _path: std::path::PathBuf, _name: String) {}
+
+    /// Clear the active project (when project is unloaded).
+    /// Default implementation does nothing.
+    fn clear_project(&self) {}
 }
 
 /// A no-op implementation for when UI output is not needed