fix(repo): require an explicit repository to delete or archive with --yes

In a clone of a fork, repository discovery prefers the upstream remote,
so `tea repo delete --yes` deleted the parent repository. With --yes,
repo delete and repo archive now require the repository as an argument
or --repo. Interactively, repo delete asks the user to type the
repository name, and both prompts say where an inferred repository
came from.

Signed-off-by: bircni <bircni@icloud.com>

internal/app/repo_mutations_test.go

@@ -0,0 +1,74 @@
+// Copyright 2026 The Gitea Authors. All rights reserved.
+// SPDX-License-Identifier: MIT
+
+package app
+
+import (
+	"context"
+	"net/http"
+	"net/http/httptest"
+	"testing"
+
+	"gitea.dev/tea/internal/clierr"
+	"github.com/stretchr/testify/require"
+)
+
+// upstreamCheckout discovers the repository from the upstream remote, as in a clone of a fork.
+func upstreamCheckout(server *httptest.Server) *fakeGit {
+	return &fakeGit{results: map[string]string{
+		"symbolic-ref --short HEAD":       "main",
+		"config --get branch.main.remote": "upstream",
+		"remote get-url upstream":         server.URL + "/alice/project.git",
+	}}
+}
+
+func TestRepoDeleteAndArchiveRequireExplicitRepositoryWithYes(t *testing.T) {
+	var requests []string
+	server := newAuthenticatedServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+		requests = append(requests, r.Method+" "+r.URL.Path)
+		w.WriteHeader(http.StatusNoContent)
+	}))
+	defer server.Close()
+	for _, verb := range []string{"delete", "archive"} {
+		deps, _, _ := serverDeps(t, server.URL)
+		deps.Git = upstreamCheckout(server)
+		err := Execute(context.Background(), deps, []string{"repo", verb, "--yes"})
+		require.Equal(t, clierr.Usage, clierr.ExitCode(err), "%v", err)
+		require.ErrorContains(t, err, "--yes requires an explicit repository, not one inferred from git remote upstream: tea repo "+verb+" alice/project --yes")
+	}
+	require.Empty(t, requests)
+	deps, _, _ := serverDeps(t, server.URL)
+	deps.Git = upstreamCheckout(server)
+	require.NoError(t, Execute(context.Background(), deps, []string{"repo", "delete", "alice/project", "--yes"}))
+	require.Equal(t, []string{"DELETE /api/v1/repos/alice/project"}, requests)
+}
+
+func TestRepoDeleteAsksToTypeTheRepositoryName(t *testing.T) {
+	var requests []string
+	server := newAuthenticatedServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+		requests = append(requests, r.Method+" "+r.URL.Path)
+		w.WriteHeader(http.StatusNoContent)
+	}))
+	defer server.Close()
+	for _, test := range []struct {
+		answer  string
+		deleted bool
+	}{{"alice/other", false}, {"", false}, {"alice/project", true}} {
+		requests = nil
+		deps, _, _ := serverDeps(t, server.URL)
+		deps.Git = upstreamCheckout(server)
+		prompt := &scriptedPrompter{inputs: map[string]string{"Delete alice/project (from git remote upstream)? This cannot be undone. Type alice/project to confirm:": test.answer}}
+		deps.Prompter = prompt
+		deps.Streams.InTTY, deps.Streams.ErrTTY = true, true
+		err := Execute(context.Background(), deps, []string{"repo", "delete"})
+		require.Len(t, prompt.asked, 1)
+		require.Empty(t, prompt.confirmations)
+		if !test.deleted {
+			require.Equal(t, clierr.Canceled, clierr.ExitCode(err), "%v", err)
+			require.Empty(t, requests)
+			continue
+		}
+		require.NoError(t, err)
+		require.Equal(t, []string{"DELETE /api/v1/repos/alice/project"}, requests)
+	}
+}