fix(procs): merge legacy logs into an existing procs/logs directory

The one-shot `~/.sase/tasks` -> `~/.sase/procs` migration only relocated the
legacy logs directory when `procs/logs` did not exist yet. A home that had
already written canonical proc logs kept its legacy files at the old path even
though every migrated row's `log_path` was rewritten to point under
`procs/logs`, so those logs read as missing.

`_relocate_legacy_logs` now merges entry by entry when the destination already
exists, letting an already-canonical log win a name collision so a live
writer's open file is never overwritten. The legacy directory is symlinked to
the canonical one only once it is empty; when collisions remain, the migration
warns and leaves the real directory reachable instead of hiding the leftovers
behind a symlink to their canonical namesakes.

This fixes future migrations only. The migration marker is one-shot, so homes
already migrated by the shipped version still need a repair pass, which is
recorded as a follow-up on sase-lh.8.

Also finishes the terminology sweep from the proc rename: ACE handlers,
actions, modals, artifact widgets, the session registry and display helpers,
the quit-confirm and procs-pane stylesheet comments, and the affected tests now
say "proc" rather than "background task" in docstrings, comments, and rendered
text.

SASE_BEAD=[sase-lh.8][1]
SASE_TYPE=stitch
SASE_AGENT=[bbugyi200.athena.sase-lh.land][2]

[1]: https://github.com/sase-org/sase--beads/blob/main/pages/sase-lh/sase-lh.8.md
[2]: https://github.com/sase-org/sase--agents/blob/main/families/bbugyi200.athena.sase-lh.land.md

Author: bbugyi200

src/sase/ace/handlers/mail.py

@@ -54,7 +54,7 @@ def mail_execute_task(
     workspace_dir: str,
     workspace_num: int,
 ) -> tuple[bool, str]:
-    """Non-interactive: execute_mail + status transition. Runs as background task.
+    """Non-interactive: execute_mail + status transition. Runs as a proc.
 
     Releases workspace in finally block.
 

src/sase/ace/handlers/reword.py

@@ -28,7 +28,7 @@ def _sync_description_bg(workspace_dir: str, file_path: str, name: str) -> None:
 
     Runs ``get_description`` to get the clean description from the commit
     message and writes it back to the ``.gp`` file.  Uses ``print()`` instead
-    of Rich console since this runs in a background task with captured stdout.
+    of Rich console since this runs in a proc with captured stdout.
 
     Args:
         workspace_dir: Path to the workspace directory.
@@ -190,7 +190,7 @@ def add_tag_task(
     tag_name: str,
     tag_value: str,
 ) -> tuple[bool, str]:
-    """Execute add-tag as a background task.
+    """Execute add-tag as a proc.
 
     Claims a workspace, checks out the Patch, runs sase_hg_reword --add-tag,
     and releases the workspace in a finally block.
@@ -319,7 +319,7 @@ def reword_execute_task(
     project_basename: str,
     edited_description: str,
 ) -> tuple[bool, str]:
-    """Non-interactive: claim workspace, checkout Patch branch, apply reword. Background task.
+    """Non-interactive: claim workspace, checkout Patch branch, apply reword. Runs as a proc.
 
     Claims a workspace, checks out the Patch, runs the reword with the edited
     description, syncs the description back to the project file, and releases

src/sase/ace/tui/actions/agents/_dismissing.py

@@ -199,7 +199,7 @@ def _submit_bulk_dismiss_persistence_task(
         added: set[AgentIdentity] | None = None,
         recent_group: SavedAgentGroupWire | None = None,
     ) -> None:
-        """Submit a batch dismissal's persistence as a tracked background task."""
+        """Submit a batch dismissal's persistence as a tracked proc."""
         identities = {a.identity for a in agents}
         if identities & self._dismiss_persistence_inflight:
             return
@@ -329,7 +329,7 @@ def _submit_dismiss_persistence_task(
         added: set[AgentIdentity] | None = None,
         recent_group: SavedAgentGroupWire | None = None,
     ) -> None:
-        """Submit single-agent dismiss persistence as a tracked background task."""
+        """Submit single-agent dismiss persistence as a tracked proc."""
         identity = agent.identity
         if identity in self._dismiss_persistence_inflight:
             return

src/sase/ace/tui/actions/agents/_marking.py

@@ -187,7 +187,7 @@ def _submit_marked_group_save_persistence_task(
         group: SavedAgentGroupWire,
         group_name: str | None = None,
     ) -> None:
-        """Submit marked-group save persistence as a tracked background task."""
+        """Submit marked-group save persistence as a tracked proc."""
         identities = {agent.identity for agent in agents}
         if identities & self._dismiss_persistence_inflight:
             return

src/sase/ace/tui/actions/agents/_monitor_stop_flow.py

@@ -40,7 +40,7 @@ def on_dismiss(confirmed: bool | None) -> None:
         )
 
     def _do_stop_monitor(self, agent: Agent) -> None:
-        """Submit the blocking monitor stop as a tracked background task."""
+        """Submit the blocking monitor stop as a tracked proc."""
         artifacts_dir = agent.get_artifacts_dir()
         monitor_label = agent.monitor_label or agent.monitor_command or "monitor"
         if artifacts_dir is None or not agent.project_file:

src/sase/ace/tui/actions/agents/_notification_gate_execution.py

@@ -49,7 +49,7 @@ def submit_gate_execution_task(
     notification: Notification,
     submission: GateSubmission,
 ) -> bool:
-    """Execute a neutral gate through ACE's tracked background task queue."""
+    """Execute a neutral gate through ACE's tracked proc queue."""
     bundle_value = notification.action_data.get("bundle_path")
     if not bundle_value:
         app.notify("No neutral gate bundle in notification", severity="error")  # type: ignore[attr-defined]

src/sase/ace/tui/actions/base.py

@@ -213,7 +213,7 @@ def action_reword(self) -> None:
         if edited_description is None:
             return
 
-        # Non-interactive phase: submit reword as background task
+        # Non-interactive phase: submit reword as a proc
         cl_name = patch.name
         display_cl_name = humanize_cl_name(cl_name)
         project_file = patch.file_path
@@ -244,7 +244,7 @@ def action_add_tag(self) -> None:
         This action:
         1. Validates PR is set and STATUS is editable
         2. Shows TagInputModal for tag name/value input
-        3. Submits background task that claims workspace, checks out Patch branch, adds tag
+        3. Submits a proc that claims workspace, checks out Patch branch, adds tag
         4. Shows toast notifications for start/completion/failure
         """
         # On agents tab, dispatch to wait-for action
@@ -322,7 +322,7 @@ def action_mail(self) -> None:
         1. Validates STATUS is "Ready"
         2. Claims workspace and gets workspace directory
         3. Runs interactive prepare_mail in suspend() (y/n prompt)
-        4. If confirmed, submits execute_mail + status transition as background task
+        4. If confirmed, submits execute_mail + status transition as a proc
         5. Shows toast notifications for start/completion/failure
         """
         import os
@@ -385,8 +385,8 @@ def action_mail(self) -> None:
             release_workspace(project_file, workspace_num, "mail", cl_name)
             return
 
-        # Non-interactive phase: submit execute_mail as background task
-        # The background task owns the workspace from here and releases in finally
+        # Non-interactive phase: submit execute_mail as a proc
+        # The proc owns the workspace from here and releases in finally
         def proc_callable() -> tuple[bool, str]:
             return mail_execute_task(patch, workspace_dir, workspace_num)
 

src/sase/ace/tui/actions/hints/_accept.py

@@ -95,7 +95,7 @@ def _process_accept_input(self, user_input: str) -> None:
 
         # Run the accept workflow (with mark_ready_to_mail flag if @ suffix was used).
         # When should_mail is True, _run_accept_workflow sets up an on_success
-        # callback that triggers action_mail() after the background task completes.
+        # callback that triggers action_mail() after the proc completes.
         self._run_accept_workflow(  # type: ignore[attr-defined]
             patch,
             entries,

src/sase/ace/tui/actions/hints/_rewind.py

@@ -17,7 +17,7 @@ def _rewind_task(
     selected_entry_num: int,
     skip_vcs: bool = False,
 ) -> tuple[bool, str]:
-    """Execute rewind workflow as a background task.
+    """Execute rewind workflow as a proc.
 
     Returns:
         Tuple of (success, message).

src/sase/ace/tui/actions/lifecycle.py

@@ -192,11 +192,11 @@ def _restore_last_selection(self, last_name: str | None = None) -> None:
                 return
 
     def _count_running_tasks(self) -> int:
-        """Return the count of running background tasks."""
+        """Return the count of running procs."""
         return self._proc_queue.running_count  # type: ignore[attr-defined]
 
     def _kill_all_running_tasks(self) -> None:
-        """Kill all running background tasks."""
+        """Kill all running procs."""
         for task in self._proc_queue.get_all():  # type: ignore[attr-defined]
             if task.status == "running":
                 self._kill_proc(task.proc_id)  # type: ignore[attr-defined]