# v0.19.2 — Project Persona Default, Archive Toggle, Channel Reorder

**Status:** Implementation  
**Depends on:** v0.19.1  

---

## 1. Project-level Persona Default

### Concept

Bind a persona to a project so all chats inherit model, system prompt,
and parameters without selecting it each time. The persona acts as a
fallback when no explicit preset is chosen per-message.

### Resolution Chain (completion.go)

```
1. Explicit req.PresetID       → highest priority
2. Project persona default     → fallback when no explicit preset  ← NEW
3. No persona                  → bare model, no persona context
```

### Storage

`projects.settings` JSONB:
```json
{ "persona_id": "uuid-here", "system_prompt": "..." }
```

### Backend Changes

In `completion.go`, after the explicit preset block, before
`resolveConfig`:

```go
// ── Project persona fallback (v0.19.2) ──
if req.PresetID == "" && h.stores.Projects != nil {
    projID, _ := h.stores.Projects.GetProjectIDForChannel(ctx, channelID)
    if projID != "" {
        proj, _ := h.stores.Projects.GetByID(ctx, projID)
        if proj != nil {
            if pid, ok := proj.Settings["persona_id"].(string); ok && pid != "" {
                preset := ResolvePreset(h.stores, pid, userID)
                if preset != nil {
                    personaID = preset.ID
                    if req.Model == "" { req.Model = preset.BaseModelID }
                    // ... same defaults as explicit preset
                }
            }
        }
    }
}
```

### Frontend Changes

Project detail panel: persona picker dropdown below system prompt.
Lists available personas, saves to `settings.persona_id`.

---

## 2. Project Archive Toggle

### Behavior

- Toggle in project detail panel (checkbox)
- Archived projects hidden from sidebar by default
- "Show archived" toggle at bottom of sidebar (or in panel)
- Uses existing `is_archived` column — no migration needed

### Files Changed

- `src/js/projects-ui.js` — archive toggle in panel, sidebar filter
- `src/js/ui-core.js` — filter archived in renderChatList
- `src/css/styles.css` — dimmed style for archived

---

## 3. Channel Reorder Within Project

### Behavior

- Dragging a chat within the same project group reorders it
- Drop between chats inserts at that position
- Calls `PUT /projects/:id/channels/reorder` with new order
- Position persisted server-side, respected on next load

### Implementation

- `onProjectDrop` detects same-project reorder vs cross-project move
- Compute new channel order from DOM after drop
- Channels within project sorted by position from
  `project_channels.position` (loaded alongside projects)

### Files Changed

- `src/js/projects-ui.js` — reorder logic
- `src/js/ui-core.js` — sort projChats by position
- `src/js/app.js` — store project channel positions

---

## Files Summary

| File | Change |
|------|--------|
| `server/handlers/completion.go` | Project persona fallback |
| `src/js/projects-ui.js` | Persona picker, archive toggle, reorder |
| `src/js/ui-core.js` | Archive filter, position sort |
| `src/js/app.js` | Channel positions state |
| `src/css/styles.css` | Archive styles |
| `VERSION` | 0.19.1 → 0.19.2 |
| `CHANGELOG.md` | New entry |

No migrations. No new files.