docs: rewrite the tool tables and slim down the READMEs (#215)

Fixes https://gitea.com/gitea/gitea-mcp/issues/214.

The tool tables listed tools that had not existed for several releases. They are regenerated from the registry, gain an `Access` column so it is visible what disappears under `-r` / `GITEA_READONLY`, and get their fine-grained scopes back. `TestReadmeToolTables` now compares them against the registry in both directions, for every translation.

Other corrections from verifying the prose against the source: the pagination parameter is `per_page`, not `perPage`; Go 1.26 is required, not 1.24; the Chinese READMEs were missing the OpenCode and Mistral Vibe sections.

Also trimmed the drifted table of contents and the sections the intro and `gitea-mcp --help` already cover, and dropped the heading emoji. `CLAUDE.md` had its own stale tool list, so it now points at `AGENTS.md` like gitea/gitea does.

---------

Co-authored-by: silverwind <me@silverwind.io>
Reviewed-on: https://gitea.com/gitea/gitea-mcp/pulls/215
Reviewed-by: silverwind <2021+silverwind@noreply.gitea.com>

pkg/tool/tool.go

@@ -30,6 +30,18 @@ func (t *Tool) RegisterRead(s server.ServerTool) {
 	t.read = append(t.read, s)
 }
 
+// ReadTools returns the read-only tools registered on this domain, ignoring
+// the read-only and allowlist flags that Tools applies.
+func (t *Tool) ReadTools() []server.ServerTool {
+	return t.read
+}
+
+// WriteTools returns the write tools registered on this domain, ignoring the
+// read-only and allowlist flags that Tools applies.
+func (t *Tool) WriteTools() []server.ServerTool {
+	return t.write
+}
+
 func (t *Tool) Tools() []server.ServerTool {
 	all := make([]server.ServerTool, 0, len(t.write)+len(t.read))
 	if !flag.ReadOnly {