feat(tools): make repo the canonical repo-identifier arg; name now an alias (#38)

Every caller (claude.ai connector, LLMs primed on gitea/GitHub) sends the repo
identifier as `repo`, but the 33 per-repo identifier tools advertised `name`.
The v0.2.8 shim aliased repo->name so it worked, yet the advertised inputSchema
still said `name` — a misleading contract, with the shim load-bearing.

- Flip all 33 identifier tools: schema property + required + struct field/tag
  from `name` to `repo`. A compliant `repo` caller now matches the struct
  directly; the shim is pure back-compat.
- normalizeAliases is now bidirectional (name<->repo), so legacy `name` callers
  still resolve, and repo_create / create_project_from_template — whose `name`
  means "name of the NEW repo", not an existing-repo id — keep `name` and still
  accept `repo`.
- `number`/`index` left as-is (out of scope; separate pre-existing quirk where
  pr_merge advertises `index` rather than `number`).
- Tests: schema-canonical assertion + flipped alias round-trip (explicit `repo`
  wins over `name`).

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

internal/tools/issue_create.go

@@ -29,21 +29,21 @@ func (t *IssueCreate) Descriptor() registry.ToolDescriptor {
 			"type":"object",
 			"properties":{
 				"owner":{"type":"string"},
-				"name":{"type":"string"},
+				"repo":{"type":"string"},
 				"title":{"type":"string"},
 				"body":{"type":"string"},
 				"labels":{"type":"array","items":{"type":"integer"}},
 				"assignees":{"type":"array","items":{"type":"string"}},
 				"milestone":{"type":"integer"}
 			},
-			"required":["owner","name","title"]
+			"required":["owner","repo","title"]
 		}`),
 	}
 }
 
 type issueCreateArgs struct {
 	Owner     string   `json:"owner"`
-	Name      string   `json:"name"`
+	Repo      string   `json:"repo"`
 	Title     string   `json:"title"`
 	Body      string   `json:"body"`
 	Labels    []int64  `json:"labels"`
@@ -64,7 +64,7 @@ func (t *IssueCreate) Call(ctx context.Context, raw json.RawMessage) (json.RawMe
 	}
 	body := identity.ApplyFooter(args.Body, auth.Caller(ctx))
 
-	iss, err := t.c.CreateIssue(ctx, args.Owner, args.Name, gitea.CreateIssueArgs{
+	iss, err := t.c.CreateIssue(ctx, args.Owner, args.Repo, gitea.CreateIssueArgs{
 		Title:     args.Title,
 		Body:      body,
 		Labels:    args.Labels,