refactor: update setup-projects-meta for simplified wiki pathing

- Changed from ~/projects/projects-wiki/.wiki to ~/projects/.wiki/
- Removed legacy migration logic (no longer needed)
- Updated all script references and documentation
- Simplified Phase 4 detection (single canon path)

This aligns with projects-wiki repo changes where nested .wiki/
was removed and content now lives in root.

skills/setup-projects-meta/README.md

@@ -3,7 +3,7 @@
 One-time skill that brings up the local `projects-meta-mcp` stdio server on a
 new (or freshly broken) machine. Clones the server repo, builds it, writes
 `~/.config/projects-mcp/auth.toml` with the user's Gitea token, clones the
-shared wiki to `~/projects/projects-wiki/.wiki`, and registers `mcpServers.projects-meta`
+shared wiki to `~/projects/.wiki`, and registers `mcpServers.projects-meta`
 in `~/.claude.json`.
 
 The runtime policy for *using* the resulting tools lives in
@@ -31,8 +31,7 @@ only place that touches user-level config or installs the server.
 | `~/.local/projects-meta-mcp/dist/server.js` | built stdio entry point |
 | `~/.config/projects-mcp/auth.toml` | Gitea credentials (token-bearing) |
 | `~/.cache/projects-mcp/tasks.json` | aggregated tasks cache |
-| `~/projects/projects-wiki/` | shared wiki clone root (Gitea repo `projects-wiki`) |
-| `~/projects/projects-wiki/.wiki/` | wiki content root (read by MCP server) |
+| `~/projects/.wiki/` | shared wiki clone (Gitea repo `projects-wiki`, content in root) |
 | `~/.claude.json` (`mcpServers.projects-meta`) | MCP registration |
 
 ## Hard rules
@@ -42,13 +41,9 @@ only place that touches user-level config or installs the server.
   not to clone or write secrets.
 - **Never echo the Gitea token in chat.** Edit / Write tool calls inevitably
   contain it (that's how it lands in `auth.toml`); chat output must not.
-- **Never clone over an unrelated `~/projects/projects-wiki/` (or legacy `~/projects/.wiki`).**
-  If either path exists with a non-matching `origin`, stop and ask — the user
+- **Never clone over an unrelated `~/projects/.wiki/`.**
+  If it exists with a non-matching `origin`, stop and ask — the user
   may have an unrelated wiki there.
-- **Don't use the legacy `~/projects/.wiki` path.** It's deprecated — the MCP
-  server's `loadWiki` reads from `~/projects/projects-wiki/.wiki/<type>/...`,
-  while writes to `~/projects/.wiki/.wiki/...` would be invisible. Phase 4
-  detects a legacy clone and migrates to the canon path.
 - **Always `chmod 600` `auth.toml` on Linux / macOS.** Token leak otherwise.
 
 ## Procedure (high-level)
@@ -73,7 +68,7 @@ Full procedure with shell snippets and templates lives in [`SKILL.md`](SKILL.md)
 1. Stop. Don't fix forward.
 2. `cp <file>.bak-<ts> <file>` for `~/.claude.json` and `~/.config/projects-mcp/auth.toml`.
 3. Optional: `rm -rf ~/.local/projects-meta-mcp` and `rm -rf ~/.cache/projects-mcp`.
-   Keep `~/projects/projects-wiki/` — it's a useful clone regardless of MCP state.
+   Keep `~/projects/.wiki/` — it's a useful clone regardless of MCP state.
 4. Restart Claude Code.
 5. Confirm `mcp__projects-meta__*` tools are gone (or back to the prior version).