chore: rename remaining qwibitai/nanoclaw references to nanocoai/nanoclaw

Sweep of outbound strings, doc URLs, comments, and clone instructions
that were missed in the original org rename. One both-match case in
setup/lib/channels-remote.sh (URL detection) accepts either name so
existing forks with a `qwibitai` remote continue to resolve cleanly;
everywhere else is a straight rename.

Historical mentions left intact:
- CHANGELOG.md (v2.0.0 entry, frozen history)
- .claude/skills/add-gmail-tool/SKILL.md (pre-v2 qwibitai skill — historical)
- repo-tokens/badge.svg (auto-regenerated by update-tokens.yml)

repo-tokens/README.md

@@ -12,7 +12,7 @@ A GitHub Action that calculates the size of your codebase in terms of tokens and
 ## Usage
 
 ```yaml
-- uses: qwibitai/nanoclaw/repo-tokens@v1
+- uses: nanocoai/nanoclaw/repo-tokens@v1
   with:
     include: 'src/**/*.ts'
     exclude: 'src/**/*.test.ts'
@@ -34,7 +34,7 @@ Repos using repo-tokens:
 
 | Repo | Badge |
 |------|-------|
-| [NanoClaw](https://github.com/qwibitai/NanoClaw) | ![tokens](https://raw.githubusercontent.com/qwibitai/NanoClaw/main/repo-tokens/badge.svg) |
+| [NanoClaw](https://github.com/nanocoai/NanoClaw) | ![tokens](https://raw.githubusercontent.com/nanocoai/NanoClaw/main/repo-tokens/badge.svg) |
 
 ### Full workflow example
 
@@ -59,7 +59,7 @@ jobs:
         with:
           python-version: '3.12'
 
-      - uses: qwibitai/nanoclaw/repo-tokens@v1
+      - uses: nanocoai/nanoclaw/repo-tokens@v1
         id: tokens
         with:
           include: 'src/**/*.ts'