fix(gitea): make gitea-releases executable and correct misleading domain claims

gitea-releases was the weakest skill in the plugin: no allowed-tools, no
owner/repo resolution, and a checkbox list where a dispatch table belongs, so
an agent reaching it had to guess both its permissions and its inputs. The
id-vs-tag_name trap — deleting by tag name where the API wants the numeric id —
is restored as an explicit Gotcha because it destroys the wrong release
silently.

Elsewhere the `exclusive` flag was documented on the wrong side of the
read/write split, and label data from one instance was presented as though it
were universal, which invites an agent to assume a taxonomy that does not
exist on the target repo. rename_branch was missing from the branch surface.
Reference prose and fences are cleaned up in passing.

plugins/gitea/skills/gitea-branches/references/commits.md

@@ -8,8 +8,9 @@ source_keys:
 # Commit operations
 
 Read-only commit history, scoped to a repo (optionally to one branch or one path). Call signatures
-below were verified live against the deployed `gitea-mcp` server via `ToolSearch` at authoring time,
-not copied from research docs, for the same drift-avoidance reason noted in `references/branches.md`.
+below were verified live against the deployed `gitea-mcp` server via `ToolSearch`, not copied from
+research docs, for the same drift-avoidance reason noted in `references/branches.md`. **Last verified
+against gitea-mcp v1.7.0**, as reported by `get_gitea_mcp_server_version`.
 
 This domain has no prior skill precedent — it's new coverage added alongside branches because commit
 history is naturally scoped to a branch (a "what happened on this branch" question), not because it
@@ -27,7 +28,7 @@ shares any tool family with branch create/delete.
 - `per_page` (number, optional, default: `30`, minimum: `1`)
 
 **Call:**
-```
+```text
 list_commits owner: <owner> repo: <repo> sha: <branch-or-sha> path: <optional-path>
 ```
 
@@ -52,7 +53,7 @@ Paginate per the pagination Gotcha in SKILL.md if you need more than one page of
 - `sha` (string, required)
 
 **Call:**
-```
+```text
 get_commit owner: <owner> repo: <repo> sha: <commit-sha>
 ```