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/config/credstore.go

@@ -1,72 +0,0 @@
-// Copyright 2026 The Gitea Authors. All rights reserved.
-// SPDX-License-Identifier: MIT
-
-package config
-
-import (
-	"path/filepath"
-	"sync"
-	"time"
-
-	"github.com/adrg/xdg"
-	"github.com/go-signet/sdk-go/credstore"
-	"golang.org/x/oauth2"
-)
-
-var (
-	tokenStore     *credstore.SecureStore[credstore.Token]
-	tokenStoreOnce sync.Once
-
-	saveOAuthTokenToStore = func(loginName, accessToken, refreshToken string, expiresAt time.Time) error {
-		return getTokenStore().Save(loginName, credstore.Token{
-			AccessToken:  accessToken,
-			RefreshToken: refreshToken,
-			ExpiresAt:    expiresAt,
-			ClientID:     loginName,
-		})
-	}
-	deleteOAuthTokenFromStore = func(loginName string) error {
-		return getTokenStore().Delete(loginName)
-	}
-)
-
-func getTokenStore() *credstore.SecureStore[credstore.Token] {
-	tokenStoreOnce.Do(func() {
-		filePath := filepath.Join(xdg.ConfigHome, "tea", "credentials.json")
-		tokenStore = credstore.DefaultTokenSecureStore("tea-cli", filePath)
-	})
-	return tokenStore
-}
-
-// LoadOAuthToken loads OAuth tokens from the secure store.
-func LoadOAuthToken(loginName string) (*credstore.Token, error) {
-	tok, err := getTokenStore().Load(loginName)
-	if err != nil {
-		return nil, err
-	}
-	return &tok, nil
-}
-
-// SaveOAuthToken saves OAuth tokens to the secure store.
-func SaveOAuthToken(loginName, accessToken, refreshToken string, expiresAt time.Time) error {
-	return saveOAuthTokenToStore(loginName, accessToken, refreshToken, expiresAt)
-}
-
-// DeleteOAuthToken removes tokens from the secure store.
-func DeleteOAuthToken(loginName string) error {
-	return deleteOAuthTokenFromStore(loginName)
-}
-
-// SaveOAuthTokenFromOAuth2 saves an oauth2.Token to credstore, falling back to
-// the existing login's values for empty refresh token or zero expiry.
-func SaveOAuthTokenFromOAuth2(loginName string, token *oauth2.Token, login *Login) error {
-	refreshToken := token.RefreshToken
-	if refreshToken == "" {
-		refreshToken = login.GetRefreshToken()
-	}
-	expiry := token.Expiry
-	if expiry.IsZero() {
-		expiry = login.GetTokenExpiry()
-	}
-	return SaveOAuthToken(loginName, token.AccessToken, refreshToken, expiry)
-}