chore(plugin): resync plugin/ with the quoted skill description

upstream/main quoted the emitted skill description so strict YAML readers
accept it (#1554), but plugin/ only exists on this branch, so the
committed copy kept the bare scalar and plugin-drift went red on the
merge result. Regenerated with scripts/sync-plugin.sh 0.8.1.

Signed-off-by: Kody <kaidi.shi.1121@gmail.com>

Author: Geek0x0

plugin/skills/codebase-memory/SKILL.md

@@ -1,6 +1,6 @@
 ---
 name: codebase-memory
-description: Use the codebase knowledge graph for structural code queries. Triggers on: explore the codebase, understand the architecture, what functions exist, show me the structure, who calls this function, what does X call, trace the call chain, find callers of, show dependencies, impact analysis, dead code, unused functions, high fan-out, refactor candidates, code quality audit, graph query syntax, Cypher query examples, edge types, how to use search_graph.
+description: "Use the codebase knowledge graph for structural code queries. Triggers on: explore the codebase, understand the architecture, what functions exist, show me the structure, who calls this function, what does X call, trace the call chain, find callers of, show dependencies, impact analysis, dead code, unused functions, high fan-out, refactor candidates, code quality audit, graph query syntax, Cypher query examples, edge types, how to use search_graph."
 ---
 
 # Codebase Memory — Knowledge Graph Tools