fix(gitea-prs): correct reference drift against gitea-mcp v1.7.0

The reference files were last verified against v1.3.0 -- references/sources.md
still said so. PR #106 re-verified the write side only, so three defects had
accumulated on the read/review side. All three reproduced against the deployed
server before being fixed; get_gitea_mcp_server_version reports v1.7.0.

- reviews.md forbade review_comments on the "get" response and directed callers
  to review_scomments, which does not exist. The upstream slim.go typo was
  corrected; a live pull_request_read on PR #106 returns "review_comments":1 and
  no review_scomments key. review_comments is an integer count, not comment
  objects -- distinct from the get_review_comments method. Also fixed in
  pull-requests.md's response-shape list.
- pull_request_review_write grants seven methods; only four were documented.
  reply_comment, resolve_thread, unresolve_thread and the comment_id parameter
  had zero mentions anywhere in the skill. Documented from the schema, in a
  Comment threads section kept outside the numbered review state machine --
  they are not lifecycle states.
- review_id was documented as required for get_review_comments. It is optional;
  omitting it lists every inline comment on the PR. Confirmed behaviourally:
  get_review without it errors, get_review_comments without it returns [].

sources.md now records v1.7.0 as the last-verified version, so the next reader
knows what these files were checked against.

Refs #99

plugins/gitea/.apm/skills/gitea-prs/SKILL.md

@@ -34,7 +34,7 @@ Resolve `owner` and `repo` from context first, and confirm the number names a PR
 | Create a PR — subject to the silent-drop Gotcha above | `pull_request_write` | `references/pull-requests.md` |
 | Update, close, reopen or retarget a PR, sync it with its base, or add/remove reviewers | `pull_request_write` | `references/pull-requests.md` |
 | Merge a PR, or judge whether it can merge | `pull_request_write method: "merge"` | `references/merging.md` |
-| Read, create, submit, dismiss or delete a code review | `pull_request_read`, `pull_request_review_write` | `references/reviews.md` |
+| Read, create, submit, dismiss or delete a code review, or reply to and resolve a review comment thread | `pull_request_read`, `pull_request_review_write` | `references/reviews.md` |
 
 Whatever `"create"` dropped takes a second call once the PR exists — `"update"` for milestone and assignees, `"add_reviewers"` for reviewers.