feat(wiki): wiki 頁型允許清單新增 LEARN

What：gitea.sh 的 wiki-repo 允許型別清單、wiki 技能 SKILL.md 的頁型清單，以及 check-wiki-rules.sh 的驗證案例，同步收錄 LEARN 頁型。
Why：jsc-log 新增 LEARN wiki 頁型，若允許清單未收錄，wiki-repo LEARN 會以 unknown type（exit 2）被擋下，學習紀錄頁無法解析存放位置。
How：resolve_wiki_repo 的 case 白名單加入 LEARN，解析順序維持 JSC_WIKI_REPO_LEARN 優先、退回 JSC_WIKI_REPO、不跨型別代用；check-wiki-rules.sh 補上 LEARN 專屬變數優先與退回共用預設兩個案例；SKILL.md 允許頁型清單同步更新。
Who：jsc-gitea wiki 技能與其呼叫方（jsc-log 等）的 wiki 頁型解析功能。

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

skills/wiki/SKILL.md

@@ -9,10 +9,10 @@ Every wiki operation in the jsc skill set goes through this skill. One entry poi
 
 ## Resolve the wiki location
 
-Different page types can live in different `{owner}/{repo}` repos, classified by page-name prefix: `QUESTION`, `PLAN`, `ANALYZE`, `MAINTAIN`, `REPO`, `LOG`, `ERROR`.
+Different page types can live in different `{owner}/{repo}` repos, classified by page-name prefix: `QUESTION`, `PLAN`, `ANALYZE`, `MAINTAIN`, `REPO`, `LOG`, `LEARN`, `ERROR`.
 
 1. Before asking the user, inspect the current shell environment for the needed repo variables and Gitea connection variables: `JSC_WIKI_REPO_{TYPE}`, `JSC_WIKI_REPO`, `GITEA_HOST`, and `GITEA_TOKEN`. Use inherited shell values first; only ask when the needed repo cannot be resolved after that check.
-2. Run `tools/gitea.sh wiki-repo {TYPE}` (TYPE = the page-name prefix). Allowed types are `QUESTION`, `PLAN`, `ANALYZE`, `MAINTAIN`, `REPO`, `LOG`, and `ERROR`. Resolution order is `JSC_WIKI_REPO_{TYPE}` first, then `JSC_WIKI_REPO`. Never borrow another type's repo.
+2. Run `tools/gitea.sh wiki-repo {TYPE}` (TYPE = the page-name prefix). Allowed types are `QUESTION`, `PLAN`, `ANALYZE`, `MAINTAIN`, `REPO`, `LOG`, `LEARN`, and `ERROR`. Resolution order is `JSC_WIKI_REPO_{TYPE}` first, then `JSC_WIKI_REPO`. Never borrow another type's repo.
 3. On exit 3 (neither is set after env inspection), ask the user for that page type's `{owner}/{repo}` per the `jsc-ask:ask` rules, and suggest setting `JSC_WIKI_REPO_{TYPE}` (can differ per type) or `JSC_WIKI_REPO` (shared default).
 
 ## Operations

tools/check-wiki-rules.sh

@@ -52,6 +52,14 @@ check_repo ANALYZE 'ANALYZE falls back to shared only' 'shared/wiki' \
   JSC_WIKI_REPO_REPO='records/REPO' \
   JSC_WIKI_REPO='shared/wiki'
 
+check_repo LEARN 'LEARN specific wins' 'lessons/LEARN' \
+  JSC_WIKI_REPO_LEARN='lessons/LEARN' \
+  JSC_WIKI_REPO='shared/wiki'
+
+check_repo LEARN 'LEARN falls back to shared only' 'shared/wiki' \
+  JSC_WIKI_REPO_LOG='records/LOG' \
+  JSC_WIKI_REPO='shared/wiki'
+
 check_repo ERROR 'ERROR uses its own repo' 'errors/wiki' \
   JSC_WIKI_REPO_ERROR='errors/wiki' \
   JSC_WIKI_REPO='shared/wiki'

tools/gitea.sh

@@ -7,7 +7,7 @@
 #   gitea.sh clone-url <owner>/<repo>                # 印出 clone URL
 #   gitea.sh hash-id <text>                          # 產生 8 碼大寫 SHA-1 hash；首碼為 0-9/A/B/C 時改成 Hxxxxxxx
 #   gitea.sh wiki-repo <TYPE>                        # 解析頁面類型的 wiki 位置：
-#       TYPE = QUESTION|PLAN|ANALYZE|MAINTAIN|REPO|LOG|ERROR（即頁名前綴）
+#       TYPE = QUESTION|PLAN|ANALYZE|MAINTAIN|REPO|LOG|LEARN|ERROR（即頁名前綴）
 #       依序取 JSC_WIKI_REPO_{TYPE} > JSC_WIKI_REPO；不得跨類型代用；都未設定 exit 3
 #   gitea.sh wiki-list <owner>/<repo>                # 列出 wiki 頁名
 #   gitea.sh wiki-get <owner>/<repo> <page>          # 印出 wiki 頁 markdown；不存在時 exit 4
@@ -27,7 +27,7 @@ script_dir=$(CDPATH= cd -- "$(dirname -- "$0")" && pwd)
 resolve_wiki_repo() { # TYPE -> JSC_WIKI_REPO_{TYPE} -> JSC_WIKI_REPO
   type=$(printf '%s' "${1:?TYPE required}" | tr a-z A-Z)
   case "$type" in
-    QUESTION|PLAN|ANALYZE|MAINTAIN|REPO|LOG|ERROR) ;;
+    QUESTION|PLAN|ANALYZE|MAINTAIN|REPO|LOG|LEARN|ERROR) ;;
     *) echo "unknown wiki type: $type" >&2; exit 2 ;;
   esac
   eval "v=\${JSC_WIKI_REPO_${type}:-}"