feat(sessions): add session browsing for OpenCode and OpenClaw

Add two new session providers following the existing convention-based
pattern. OpenCode reads three-layer JSON storage, OpenClaw parses JSONL
event streams. Wire up backend dispatch, frontend filter dropdown, icon
mappings, toolbar button for OpenClaw, and i18n subtitle updates.

src-tauri/src/session_manager/mod.rs

@@ -4,7 +4,7 @@ pub mod terminal;
 use serde::Serialize;
 use std::path::Path;
 
-use providers::{claude, codex};
+use providers::{claude, codex, openclaw, opencode};
 
 #[derive(Debug, Clone, Serialize)]
 #[serde(rename_all = "camelCase")]
@@ -40,6 +40,8 @@ pub fn scan_sessions() -> Vec<SessionMeta> {
     let mut sessions = Vec::new();
     sessions.extend(codex::scan_sessions());
     sessions.extend(claude::scan_sessions());
+    sessions.extend(opencode::scan_sessions());
+    sessions.extend(openclaw::scan_sessions());
 
     sessions.sort_by(|a, b| {
         let a_ts = a.last_active_at.or(a.created_at).unwrap_or(0);
@@ -55,6 +57,8 @@ pub fn load_messages(provider_id: &str, source_path: &str) -> Result<Vec<Session
     match provider_id {
         "codex" => codex::load_messages(path),
         "claude" => claude::load_messages(path),
+        "opencode" => opencode::load_messages(path),
+        "openclaw" => openclaw::load_messages(path),
         _ => Err(format!("Unsupported provider: {provider_id}")),
     }
 }

src-tauri/src/session_manager/providers/mod.rs

@@ -1,3 +1,5 @@
 pub mod claude;
 pub mod codex;
+pub mod openclaw;
+pub mod opencode;
 mod utils;

src-tauri/src/session_manager/providers/openclaw.rs

@@ -0,0 +1,211 @@
+use std::fs::File;
+use std::io::{BufRead, BufReader};
+use std::path::Path;
+
+use serde_json::Value;
+
+use crate::openclaw_config::get_openclaw_dir;
+use crate::session_manager::{SessionMessage, SessionMeta};
+
+use super::utils::{extract_text, parse_timestamp_to_ms, path_basename, truncate_summary};
+
+const PROVIDER_ID: &str = "openclaw";
+
+pub fn scan_sessions() -> Vec<SessionMeta> {
+    let agents_dir = get_openclaw_dir().join("agents");
+    if !agents_dir.exists() {
+        return Vec::new();
+    }
+
+    let mut sessions = Vec::new();
+
+    // Traverse each agent directory
+    let agent_entries = match std::fs::read_dir(&agents_dir) {
+        Ok(entries) => entries,
+        Err(_) => return sessions,
+    };
+
+    for agent_entry in agent_entries.flatten() {
+        let agent_path = agent_entry.path();
+        if !agent_path.is_dir() {
+            continue;
+        }
+
+        let sessions_dir = agent_path.join("sessions");
+        if !sessions_dir.is_dir() {
+            continue;
+        }
+
+        let session_entries = match std::fs::read_dir(&sessions_dir) {
+            Ok(entries) => entries,
+            Err(_) => continue,
+        };
+
+        for entry in session_entries.flatten() {
+            let path = entry.path();
+            if path.extension().and_then(|ext| ext.to_str()) != Some("jsonl") {
+                continue;
+            }
+            // Skip sessions.json index file
+            if path
+                .file_name()
+                .and_then(|n| n.to_str())
+                .map(|n| n == "sessions.json")
+                .unwrap_or(false)
+            {
+                continue;
+            }
+
+            if let Some(meta) = parse_session(&path) {
+                sessions.push(meta);
+            }
+        }
+    }
+
+    sessions
+}
+
+pub fn load_messages(path: &Path) -> Result<Vec<SessionMessage>, String> {
+    let file = File::open(path).map_err(|e| format!("Failed to open session file: {e}"))?;
+    let reader = BufReader::new(file);
+    let mut messages = Vec::new();
+
+    for line in reader.lines() {
+        let line = match line {
+            Ok(value) => value,
+            Err(_) => continue,
+        };
+        let value: Value = match serde_json::from_str(&line) {
+            Ok(parsed) => parsed,
+            Err(_) => continue,
+        };
+
+        if value.get("type").and_then(Value::as_str) != Some("message") {
+            continue;
+        }
+
+        let message = match value.get("message") {
+            Some(msg) => msg,
+            None => continue,
+        };
+
+        let raw_role = message
+            .get("role")
+            .and_then(Value::as_str)
+            .unwrap_or("unknown");
+
+        // Map OpenClaw roles to our standard roles
+        let role = match raw_role {
+            "toolResult" => "tool".to_string(),
+            other => other.to_string(),
+        };
+
+        let content = message.get("content").map(extract_text).unwrap_or_default();
+        if content.trim().is_empty() {
+            continue;
+        }
+
+        let ts = value.get("timestamp").and_then(parse_timestamp_to_ms);
+
+        messages.push(SessionMessage { role, content, ts });
+    }
+
+    Ok(messages)
+}
+
+fn parse_session(path: &Path) -> Option<SessionMeta> {
+    let file = File::open(path).ok()?;
+    let reader = BufReader::new(file);
+
+    let mut session_id: Option<String> = None;
+    let mut cwd: Option<String> = None;
+    let mut created_at: Option<i64> = None;
+    let mut last_active_at: Option<i64> = None;
+    let mut summary: Option<String> = None;
+
+    for line in reader.lines() {
+        let line = match line {
+            Ok(value) => value,
+            Err(_) => continue,
+        };
+        let value: Value = match serde_json::from_str(&line) {
+            Ok(parsed) => parsed,
+            Err(_) => continue,
+        };
+
+        if let Some(ts) = value.get("timestamp").and_then(parse_timestamp_to_ms) {
+            if created_at.is_none() {
+                created_at = Some(ts);
+            }
+            last_active_at = Some(ts);
+        }
+
+        let event_type = value.get("type").and_then(Value::as_str).unwrap_or("");
+
+        if event_type == "session" {
+            if session_id.is_none() {
+                session_id = value
+                    .get("id")
+                    .and_then(Value::as_str)
+                    .map(|s| s.to_string());
+            }
+            if cwd.is_none() {
+                cwd = value
+                    .get("cwd")
+                    .and_then(Value::as_str)
+                    .map(|s| s.to_string());
+            }
+            if let Some(ts) = value.get("timestamp").and_then(parse_timestamp_to_ms) {
+                created_at.get_or_insert(ts);
+            }
+            continue;
+        }
+
+        if event_type != "message" {
+            continue;
+        }
+
+        // Extract first message content for summary
+        if summary.is_some() {
+            continue;
+        }
+
+        let message = match value.get("message") {
+            Some(msg) => msg,
+            None => continue,
+        };
+
+        let text = message.get("content").map(extract_text).unwrap_or_default();
+        if text.trim().is_empty() {
+            continue;
+        }
+        summary = Some(text);
+    }
+
+    // Fall back to filename as session ID
+    let session_id = session_id.or_else(|| {
+        path.file_stem()
+            .and_then(|s| s.to_str())
+            .map(|s| s.to_string())
+    });
+    let session_id = session_id?;
+
+    let title = cwd
+        .as_deref()
+        .and_then(path_basename)
+        .map(|s| s.to_string());
+
+    let summary = summary.map(|text| truncate_summary(&text, 160));
+
+    Some(SessionMeta {
+        provider_id: PROVIDER_ID.to_string(),
+        session_id: session_id.clone(),
+        title,
+        summary,
+        project_dir: cwd,
+        created_at,
+        last_active_at,
+        source_path: Some(path.to_string_lossy().to_string()),
+        resume_command: None, // OpenClaw sessions are gateway-managed, no CLI resume
+    })
+}

src-tauri/src/session_manager/providers/opencode.rs

@@ -0,0 +1,271 @@
+use std::path::{Path, PathBuf};
+
+use serde_json::Value;
+
+use crate::session_manager::{SessionMessage, SessionMeta};
+
+use super::utils::{parse_timestamp_to_ms, path_basename, truncate_summary};
+
+const PROVIDER_ID: &str = "opencode";
+
+/// Return the OpenCode data directory.
+///
+/// Respects `XDG_DATA_HOME` on all platforms; falls back to
+/// `~/.local/share/opencode/storage/`.
+fn get_opencode_data_dir() -> PathBuf {
+    if let Ok(xdg) = std::env::var("XDG_DATA_HOME") {
+        if !xdg.is_empty() {
+            return PathBuf::from(xdg).join("opencode").join("storage");
+        }
+    }
+    dirs::home_dir()
+        .map(|h| h.join(".local/share/opencode/storage"))
+        .unwrap_or_else(|| PathBuf::from(".local/share/opencode/storage"))
+}
+
+pub fn scan_sessions() -> Vec<SessionMeta> {
+    let storage = get_opencode_data_dir();
+    let session_dir = storage.join("session");
+    if !session_dir.exists() {
+        return Vec::new();
+    }
+
+    let mut json_files = Vec::new();
+    collect_json_files(&session_dir, &mut json_files);
+
+    let mut sessions = Vec::new();
+    for path in json_files {
+        if let Some(meta) = parse_session(&storage, &path) {
+            sessions.push(meta);
+        }
+    }
+    sessions
+}
+
+pub fn load_messages(path: &Path) -> Result<Vec<SessionMessage>, String> {
+    // `path` is the message directory: storage/message/{sessionID}/
+    if !path.is_dir() {
+        return Err(format!("Message directory not found: {}", path.display()));
+    }
+
+    let storage = path
+        .parent()
+        .and_then(|p| p.parent())
+        .ok_or_else(|| "Cannot determine storage root from message path".to_string())?;
+
+    let mut msg_files = Vec::new();
+    collect_json_files(path, &mut msg_files);
+
+    // Parse all messages and collect (created_ts, message_id, role, parts_text)
+    let mut entries: Vec<(i64, String, String, String)> = Vec::new();
+
+    for msg_path in &msg_files {
+        let data = match std::fs::read_to_string(msg_path) {
+            Ok(d) => d,
+            Err(_) => continue,
+        };
+        let value: Value = match serde_json::from_str(&data) {
+            Ok(v) => v,
+            Err(_) => continue,
+        };
+
+        let msg_id = match value.get("id").and_then(Value::as_str) {
+            Some(id) => id.to_string(),
+            None => continue,
+        };
+
+        let role = value
+            .get("role")
+            .and_then(Value::as_str)
+            .unwrap_or("unknown")
+            .to_string();
+
+        let created_ts = value
+            .get("time")
+            .and_then(|t| t.get("created"))
+            .and_then(parse_timestamp_to_ms)
+            .unwrap_or(0);
+
+        // Collect text parts from storage/part/{messageID}/
+        let part_dir = storage.join("part").join(&msg_id);
+        let text = collect_parts_text(&part_dir);
+        if text.trim().is_empty() {
+            continue;
+        }
+
+        entries.push((created_ts, msg_id, role, text));
+    }
+
+    // Sort by created timestamp
+    entries.sort_by_key(|(ts, _, _, _)| *ts);
+
+    let messages = entries
+        .into_iter()
+        .map(|(ts, _, role, content)| SessionMessage {
+            role,
+            content,
+            ts: if ts > 0 { Some(ts) } else { None },
+        })
+        .collect();
+
+    Ok(messages)
+}
+
+fn parse_session(storage: &Path, path: &Path) -> Option<SessionMeta> {
+    let data = std::fs::read_to_string(path).ok()?;
+    let value: Value = serde_json::from_str(&data).ok()?;
+
+    let session_id = value.get("id").and_then(Value::as_str)?.to_string();
+    let title = value
+        .get("title")
+        .and_then(Value::as_str)
+        .filter(|s| !s.is_empty())
+        .map(|s| s.to_string());
+    let directory = value
+        .get("directory")
+        .and_then(Value::as_str)
+        .map(|s| s.to_string());
+
+    let created_at = value
+        .get("time")
+        .and_then(|t| t.get("created"))
+        .and_then(parse_timestamp_to_ms);
+    let updated_at = value
+        .get("time")
+        .and_then(|t| t.get("updated"))
+        .and_then(parse_timestamp_to_ms);
+
+    // Derive title from directory basename if no explicit title
+    let display_title = title.or_else(|| {
+        directory
+            .as_deref()
+            .and_then(path_basename)
+            .map(|s| s.to_string())
+    });
+
+    // Build source_path = message directory for this session
+    let msg_dir = storage.join("message").join(&session_id);
+    let source_path = msg_dir.to_string_lossy().to_string();
+
+    // Get summary from first user message
+    let summary = get_first_user_summary(storage, &session_id);
+
+    Some(SessionMeta {
+        provider_id: PROVIDER_ID.to_string(),
+        session_id: session_id.clone(),
+        title: display_title,
+        summary,
+        project_dir: directory,
+        created_at,
+        last_active_at: updated_at.or(created_at),
+        source_path: Some(source_path),
+        resume_command: Some(format!("opencode session resume {session_id}")),
+    })
+}
+
+/// Read the first user message's first text part to use as summary.
+fn get_first_user_summary(storage: &Path, session_id: &str) -> Option<String> {
+    let msg_dir = storage.join("message").join(session_id);
+    if !msg_dir.is_dir() {
+        return None;
+    }
+
+    let mut msg_files = Vec::new();
+    collect_json_files(&msg_dir, &mut msg_files);
+
+    // Collect user messages with timestamps for ordering
+    let mut user_msgs: Vec<(i64, String)> = Vec::new();
+    for msg_path in &msg_files {
+        let data = match std::fs::read_to_string(msg_path) {
+            Ok(d) => d,
+            Err(_) => continue,
+        };
+        let value: Value = match serde_json::from_str(&data) {
+            Ok(v) => v,
+            Err(_) => continue,
+        };
+
+        if value.get("role").and_then(Value::as_str) != Some("user") {
+            continue;
+        }
+
+        let msg_id = match value.get("id").and_then(Value::as_str) {
+            Some(id) => id.to_string(),
+            None => continue,
+        };
+
+        let ts = value
+            .get("time")
+            .and_then(|t| t.get("created"))
+            .and_then(parse_timestamp_to_ms)
+            .unwrap_or(0);
+
+        user_msgs.push((ts, msg_id));
+    }
+
+    user_msgs.sort_by_key(|(ts, _)| *ts);
+
+    // Take first user message and get its parts
+    let (_, first_id) = user_msgs.first()?;
+    let part_dir = storage.join("part").join(first_id);
+    let text = collect_parts_text(&part_dir);
+    if text.trim().is_empty() {
+        return None;
+    }
+    Some(truncate_summary(&text, 160))
+}
+
+/// Collect text content from all parts in a part directory.
+fn collect_parts_text(part_dir: &Path) -> String {
+    if !part_dir.is_dir() {
+        return String::new();
+    }
+
+    let mut parts = Vec::new();
+    collect_json_files(part_dir, &mut parts);
+
+    let mut texts = Vec::new();
+    for part_path in &parts {
+        let data = match std::fs::read_to_string(part_path) {
+            Ok(d) => d,
+            Err(_) => continue,
+        };
+        let value: Value = match serde_json::from_str(&data) {
+            Ok(v) => v,
+            Err(_) => continue,
+        };
+
+        // Only include text-type parts
+        if value.get("type").and_then(Value::as_str) != Some("text") {
+            continue;
+        }
+
+        if let Some(text) = value.get("text").and_then(Value::as_str) {
+            if !text.trim().is_empty() {
+                texts.push(text.to_string());
+            }
+        }
+    }
+
+    texts.join("\n")
+}
+
+fn collect_json_files(root: &Path, files: &mut Vec<PathBuf>) {
+    if !root.exists() {
+        return;
+    }
+
+    let entries = match std::fs::read_dir(root) {
+        Ok(entries) => entries,
+        Err(_) => return,
+    };
+
+    for entry in entries.flatten() {
+        let path = entry.path();
+        if path.is_dir() {
+            collect_json_files(&path, files);
+        } else if path.extension().and_then(|ext| ext.to_str()) == Some("json") {
+            files.push(path);
+        }
+    }
+}