feat!: rebuild tea on Cobra with explicit noun/verb commands (#1126)

- **switch tea to the Cobra command tree:** `internal/app` wires the packages from parts 1–4 into explicit noun/verb commands with `--repo`, `--json` / `--jq`, `--sudo` and `--debug`; `main.go` points at it. Build, release and docs tooling (`tools/cli-docs`, Makefile, goreleaser, snap, CI) and README / CONTRIBUTING are updated.
- **remove the urfave/cli command tree:** deletes `cmd/`, `modules/`, the old integration tests, contrib completion scripts and the generated `docs/CLI.md`, and drops their dependencies. This commit only deletes.

## Breaking changes

This is a breaking release. It requires Gitea 28 or newer; configuration moves to separate `config.yml` and `hosts.yml` files and requires fresh authentication, and command names, aliases, flags and output formats change. `docs/migration-1.0.md` maps every old command, flag and environment variable to its replacement.

## Issues

fixes #1118
fixes #1116
fixes #1115
fixes #1094
fixes #1091
fixes #1073
fixes #1052
fixes #1032
fixes #1023
fixes #966
fixes #908
fixes #833
fixes #831
fixes #817
fixes #804
fixes #779
fixes #770
fixes #737
fixes #697
fixes #726
fixes #677
fixes #672
fixes #633
fixes #632
fixes #560
fixes #556
fixes #523
fixes #516
fixes #510
fixes #504
fixes #500
fixes #482
fixes #406
fixes #403
fixes #373
fixes #351
fixes #344
fixes #326
fixes #325
fixes #323
fixes #246
fixes #240
fixes #232
fixes #197
fixes #172
fixes #141
fixes #69
fixes #1110
fixes #569
fixes #480
fixes #666
fixes #670
fixes #457
fixes #643
fixes #498
fixes #490
fixes #1069
fixes #834
fixes #602
fixes #328
fixes #417
fixes #571
fixes #1029
fixes #489
fixes #1050
fixes #162
fixes #430
fixes #1087
fixes #683

Reviewed-on: https://gitea.com/gitea/tea/pulls/1126
Reviewed-by: TheFox0x7 <95654+thefox0x7@noreply.gitea.com>

modules/httputil/httputil.go

@@ -1,46 +0,0 @@
-// Copyright 2026 The Gitea Authors. All rights reserved.
-// SPDX-License-Identifier: MIT
-
-package httputil
-
-import (
-	"crypto/tls"
-	"fmt"
-	"net/http"
-	"runtime"
-
-	"gitea.dev/tea/modules/version"
-)
-
-// UserAgent returns the standard User-Agent string for tea.
-func UserAgent() string {
-	ua := fmt.Sprintf("tea/%s (%s/%s)", version.Version, runtime.GOOS, runtime.GOARCH)
-	if version.SDK != "" {
-		ua += fmt.Sprintf(" go-sdk/%s", version.SDK)
-	}
-	return ua
-}
-
-// WrapTransport returns tea's standard HTTP transport: an *http.Transport
-// preset with tea's connection / response-header timeouts (see timeoutTransport)
-// and decorated to add the User-Agent header on every request. The supplied
-// tlsConfig is attached as-is (nil is fine); callers use it for insecure /
-// skip-verify logins. This is the single entry point for building a tea HTTP
-// client transport, so the timeouts can't be accidentally omitted.
-func WrapTransport(tlsConfig *tls.Config) http.RoundTripper {
-	return &userAgentTransport{base: timeoutTransport(tlsConfig)}
-}
-
-type userAgentTransport struct {
-	base http.RoundTripper
-}
-
-func (t *userAgentTransport) RoundTrip(req *http.Request) (*http.Response, error) {
-	// Set the UA at the transport so every client built from WrapTransport
-	// identifies itself, including the non-SDK clients (oauth2 flow, token
-	// refresh) that never pass through the SDK's own SetUserAgent. For SDK
-	// clients this overlaps gitea.SetUserAgent; both use httputil.UserAgent(),
-	// so the duplicate Header.Set is a no-op.
-	req.Header.Set("User-Agent", UserAgent())
-	return t.base.RoundTrip(req)
-}