rename .story_kit directory to .storkit and update all references

Renames the config directory and updates 514 references across 42 Rust
source files, plus CLAUDE.md, .gitignore, Makefile, script/release,
and .mcp.json files. All 1205 tests pass.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

script/release

@@ -3,8 +3,8 @@ set -euo pipefail
 
 # ── Configuration ──────────────────────────────────────────────
 GITEA_URL="https://code.crashlabs.io"
-REPO="dave/story-kit"
-BINARY_NAME="story-kit"
+REPO="dave/storkit"
+BINARY_NAME="storkit"
 
 # ── Load .env if present ───────────────────────────────────────
 SCRIPT_DIR="$(cd "$(dirname "$0")/.." && pwd)"
@@ -78,14 +78,14 @@ else
   RANGE="initial...${TAG}"
 fi
 
-# Extract completed stories/bugs/refactors from "story-kit: merge <id>" commits.
+# Extract completed stories/bugs/refactors from "storkit: merge <id>" commits.
 # Deduplicate (a story may have been merged more than once after reverts).
 if [ -n "$LOG_RANGE" ]; then
   MERGED_RAW=$(git log "$LOG_RANGE" --pretty=format:"%s" --no-merges \
-    | grep "^story-kit: merge " | sed 's/^story-kit: merge //' | sort -u)
+    | grep "^storkit: merge " | sed 's/^storkit: merge //' | sort -u)
 else
   MERGED_RAW=$(git log --pretty=format:"%s" --no-merges \
-    | grep "^story-kit: merge " | sed 's/^story-kit: merge //' | sort -u)
+    | grep "^storkit: merge " | sed 's/^storkit: merge //' | sort -u)
 fi
 
 # Categorise merged work items and format names.
@@ -108,14 +108,14 @@ done <<< "$MERGED_RAW"
 # Collect non-automation manual commits (direct fixes, version bumps, etc).
 if [ -n "$LOG_RANGE" ]; then
   MANUAL=$(git log "$LOG_RANGE" --pretty=format:"%s" --no-merges \
-    | grep -v "^story-kit: " \
-    | grep -v "^Revert \"story-kit: " \
+    | grep -v "^storkit: " \
+    | grep -v "^Revert \"storkit: " \
     | grep -v "^Bump version" \
     | sed 's/^/- /')
 else
   MANUAL=$(git log --pretty=format:"%s" --no-merges \
-    | grep -v "^story-kit: " \
-    | grep -v "^Revert \"story-kit: " \
+    | grep -v "^storkit: " \
+    | grep -v "^Revert \"storkit: " \
     | grep -v "^Bump version" \
     | sed 's/^/- /')
 fi