refactor(wayfinder): invoke as /wayfinder, not /wayfinding

The persona is the Wayfinder; the invocation should match. Rename the
folder and skill name to wayfinder and update the invocation examples,
README link, and changeset. "wayfinding" stays only as the activity noun.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

.changeset/wayfinding-rename.md

@@ -2,7 +2,7 @@
 "mattpocock-skills": minor
 ---
 
-Rename the **`decision-mapping`** skill to **`wayfinding`**, invoked as `/wayfinding`.
+Rename the **`decision-mapping`** skill to **`wayfinder`**, invoked as `/wayfinder`.
 
 "Decision map" was jargony and inaccurate — only one of the skill's four ticket types (Grilling) is actually a decision. The skill is reframed around the **Wayfinder**: you chart a route through a foggy problem, resolving investigation tickets one at a time until the way to the goal is clear. This makes one coherent leading-word frame (fog of war / frontier / the map) instead of mixing an invented term on top of it.
 

skills/in-progress/README.md

@@ -2,7 +2,7 @@
 
 Skills that are still being developed. They're not ready to ship — expect rough edges, breaking changes, and abandoned experiments. They're excluded from the plugin and the top-level README until they graduate to a stable bucket.
 
-- **[wayfinding](./wayfinding/SKILL.md)** — As the Wayfinder, chart a route through a foggy problem — turn a loose idea into a map of investigation tickets and resolve them one at a time until the way to the goal is clear. User-invoked.
+- **[wayfinder](./wayfinder/SKILL.md)** — As the Wayfinder, chart a route through a foggy problem — turn a loose idea into a map of investigation tickets and resolve them one at a time until the way to the goal is clear. User-invoked.
 - **[loop-me](./loop-me/SKILL.md)** — Grill yourself into implementable workflow specs over multiple sessions, using the current directory as a stateful workspace. User-invoked.
 - **[wizard](./wizard/SKILL.md)** — Generate an interactive bash wizard that walks a human through a manual procedure (setup, a one-off migration, a state transition) — opening URLs, capturing values, writing `.env` and GitHub Actions secrets. User-invoked.
 - **[writing-beats](./writing-beats/SKILL.md)** — Shape an article as a journey of beats, choose-your-own-adventure style. Pick a starting beat, write only that beat, then pivot to the next, until the article reaches a natural end.

skills/in-progress/wayfinder/SKILL.md

@@ -1,5 +1,5 @@
 ---
-name: wayfinding
+name: wayfinder
 description: As the Wayfinder, chart a route through a foggy problem — turn a loose idea into a map of investigation tickets and resolve them one at a time until the way to the goal is clear.
 disable-model-invocation: true
 ---
@@ -91,14 +91,14 @@ End every session by clearing the context and opening one or more fresh sessions
 >
 > **One session** — resolves the next unblocked ticket:
 > ```
-> Invoke /wayfinding with the map at <path>.
+> Invoke /wayfinder with the map at <path>.
 > ```
 >
 > **Parallel** — paste one line per window, up to all 3:
 > ```
-> Invoke /wayfinding with the map at <path>, ticket auth-strategy.
+> Invoke /wayfinder with the map at <path>, ticket auth-strategy.
-> Invoke /wayfinding with the map at <path>, ticket cache-layer.
+> Invoke /wayfinder with the map at <path>, ticket cache-layer.
-> Invoke /wayfinding with the map at <path>, ticket rate-limits.
+> Invoke /wayfinder with the map at <path>, ticket rate-limits.
 > ```
 
 **No open tickets remain.** The fog is pushed back far enough that the way to the goal is clear — the map is done. (The initial grilling may also surface no fog at all, in which case there was never a map to chart.) Recommend implementing directly, or using `/to-prd` to schedule a multi-session implementation.