chore: rebrand companion-os to clanker-agent

- Rename all package names from companion-* to clanker-*
- Update npm scopes from @mariozechner to @harivansh-afk
- Rename config directories .companion -> .clanker
- Rename environment variables COMPANION_* -> CLANKER_*
- Update all documentation, README files, and install scripts
- Rename package directories (companion-channels, companion-grind, companion-teams)
- Update GitHub URLs to harivansh-afk/clanker-agent
- Preserve full git history from companion-cloud monorepo

packages/clanker-teams/WEZTERM_LAYOUT_FIX.md

@@ -0,0 +1,66 @@
+# WezTerm Panel Layout Fix
+
+## Problem
+
+WezTerm was not creating the correct panel layout for clanker-teams. The desired layout is:
+
+- **Main controller panel** on the LEFT (takes 70% width)
+- **Teammate panels** stacked on the RIGHT (takes 30% width, divided vertically)
+
+This matches the layout behavior in tmux and iTerm2.
+
+## Root Cause
+
+The WezTermAdapter was sequentially spawning panes without tracking which pane should be the "right sidebar." When using `split-pane --bottom`, it would split the currently active pane (which could be any teammate pane), rather than always splitting within the designated right sidebar area.
+
+## Solution
+
+Modified `src/adapters/wezterm-adapter.ts`:
+
+1. **Added sidebar tracking**: Store the pane ID of the first teammate spawn (`sidebarPaneId`)
+2. **Fixed split logic**:
+   - **First teammate** (paneCounter=0): Split RIGHT with 30% width (leaves 70% for main)
+   - **Subsequent teammates**: Split the saved sidebar pane BOTTOM with 50% height
+3. **Used `--pane-id` parameter**: WezTerm CLI's `--pane-id` ensures we always split within the right sidebar, not whichever pane is currently active
+
+## Code Changes
+
+```typescript
+private sidebarPaneId: string | null = null; // Track the right sidebar pane
+
+spawn(options: SpawnOptions): string {
+  // First pane: split RIGHT (creates right sidebar)
+  // Subsequent panes: split BOTTOM within the sidebar pane
+  const isFirstPane = this.paneCounter === 0;
+  const weztermArgs = [
+    "cli",
+    "split-pane",
+    isFirstPane ? "--right" : "--bottom",
+    "--percent", isFirstPane ? "30" : "50",
+    ...(isFirstPane ? [] : ["--pane-id", this.sidebarPaneId!]), // Key: always split in sidebar
+    "--cwd", options.cwd,
+    // ... rest of args
+  ];
+
+  // ... execute command ...
+
+  // Track sidebar pane on first spawn
+  if (isFirstPane) {
+    this.sidebarPaneId = paneId;
+  }
+}
+```
+
+## Result
+
+✅ Main controller stays on the left at full height
+✅ Teammates stack vertically on the right at equal heights
+✅ Matches tmux/iTerm2 layout behavior
+✅ All existing tests pass
+
+## Testing
+
+```bash
+npm test -- src/adapters/wezterm-adapter.test.ts
+# ✓ 17 tests passed
+```