fix(poolside): correct Linux default directory to .local/state/poolside

Poolside stores trajectory files under the XDG state directory
(~/.local/state/poolside/trajectories/), not the data directory.
The merged PR #1241 used the wrong path, preventing session discovery.

Author: scross01

README.md

@@ -345,7 +345,7 @@ thread JSON files.
 | OpenHands CLI         | `~/.openhands/conversations/`                                                                                                                                           |
 | OhMyPi                | `~/.omp/agent/sessions/`                                                                                                                                                |
 | Pi                    | `~/.pi/agent/sessions/`                                                                                                                                                 |
-| Poolside              | `~/Library/Application Support/poolside/trajectories/` (macOS), `~/.local/share/poolside/trajectories/` (Linux), `%APPDATA%\\poolside\\trajectories\\` (Windows) |
+| Poolside              | `~/Library/Application Support/poolside/trajectories/` (macOS), `~/.local/state/poolside/trajectories/` (Linux), `%APPDATA%\\poolside\\trajectories\\` (Windows) |
 | Piebald               | `~/.local/share/piebald/`                                                                                                                                               |
 | Posit Assistant       | `~/.posit/assistant/workspaces/`                                                                                                                                        |
 | Positron Assistant    | `~/Library/Application Support/Positron/User/` (macOS)                                                                                                                  |

docs/configuration.md

@@ -264,7 +264,7 @@ can still be parsed.
 | OpenCode              | `~/.local/share/opencode/`                                                       | SQLite DB or `storage/` JSON files                                                                                              |
 | OpenHands CLI         | `~/.openhands/conversations/`                                                    | Per-conversation `base_state.json` + `events/*.json`                                                                            |
 | Pi                    | `~/.pi/agent/sessions/`                                                          | JSONL per session                                                                                                               |
-| Poolside              | `~/Library/Application Support/poolside/trajectories/` (macOS), `~/.local/share/poolside/trajectories/` (Linux), `%APPDATA%\\poolside\\trajectories\\` (Windows) | NDJSON trajectory files                                                                                                         |
+| Poolside              | `~/Library/Application Support/poolside/trajectories/` (macOS), `~/.local/state/poolside/trajectories/` (Linux), `%APPDATA%\\poolside\\trajectories\\` (Windows) | NDJSON trajectory files                                                                                                         |
 | Piebald               | `~/.local/share/piebald/`                                                        | SQLite database (`app.db`)                                                                                                      |
 | Posit Assistant       | `~/.posit/assistant/workspaces/`                                                 | Per-conversation `conversation.json` tree plus `lm-messages.jsonl` transcript                                                   |
 | Positron Assistant    | (platform-specific, see below)                                                   | JSON / JSONL per session                                                                                                        |

internal/parser/poolside_provider.go

@@ -45,7 +45,7 @@ func newPoolsideProviderFactory(def AgentDef) ProviderFactory {
 
 // poolsideTrajectoriesDir resolves the trajectories directory from a
 // provider root. The root may be either the application-data directory
-// (e.g. ~/.local/share/poolside) or the trajectories/ subdirectory
+// (e.g. ~/.local/state/poolside) or the trajectories/ subdirectory
 // itself (e.g. when passed by remote sync). When the root already
 // ends with a "trajectories" path component, it is returned as-is;
 // otherwise <root>/trajectories is appended.

internal/parser/poolside_test.go

@@ -793,13 +793,13 @@ func TestPoolsideTrajectoriesDir(t *testing.T) {
 	}{
 		{
 			name:     "application-data root appends trajectories",
-			root:     "/home/user/.local/share/poolside",
-			expected: "/home/user/.local/share/poolside/trajectories",
+			root:     "/home/user/.local/state/poolside",
+			expected: "/home/user/.local/state/poolside/trajectories",
 		},
 		{
 			name:     "trajectories directory used as-is",
-			root:     "/home/user/.local/share/poolside/trajectories",
-			expected: "/home/user/.local/share/poolside/trajectories",
+			root:     "/home/user/.local/state/poolside/trajectories",
+			expected: "/home/user/.local/state/poolside/trajectories",
 		},
 		{
 			name:     "relative trajectories used as-is",
@@ -808,8 +808,8 @@ func TestPoolsideTrajectoriesDir(t *testing.T) {
 		},
 		{
 			name:     "trajectories with trailing slash",
-			root:     "/home/user/.local/share/poolside/trajectories/",
-			expected: "/home/user/.local/share/poolside/trajectories",
+			root:     "/home/user/.local/state/poolside/trajectories/",
+			expected: "/home/user/.local/state/poolside/trajectories",
 		},
 	}
 	for _, tt := range tests {

internal/parser/types.go

@@ -807,7 +807,7 @@ var Registry = []AgentDef{
 			// macOS
 			"Library/Application Support/poolside",
 			// Linux
-			".local/share/poolside",
+			".local/state/poolside",
 			// Windows
 			"AppData/Roaming/poolside",
 		},