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/task/pull_merge.go

@@ -1,54 +0,0 @@
-// Copyright 2024 The Gitea Authors. All rights reserved.
-// SPDX-License-Identifier: MIT
-
-package task
-
-import (
-	stdctx "context"
-	"fmt"
-
-	gitea "gitea.dev/sdk"
-
-	"gitea.dev/tea/modules/config"
-)
-
-// PullMerge merges a PR
-func PullMerge(requestCtx stdctx.Context, login *config.Login, repoOwner, repoName string, index int64, opt gitea.MergePullRequestOption) error {
-	client := login.Client()
-	success, _, err := client.PullRequests.MergePullRequest(requestCtx, repoOwner, repoName, index, opt)
-	if err != nil {
-		return err
-	}
-	if success {
-		return nil
-	}
-	return fmt.Errorf("failed to merge PR #%d: %s", index,
-		mergeFailureReason(requestCtx, client, repoOwner, repoName, index))
-}
-
-// mergeFailureReason returns why merging was refused. The SDK reports refusal as
-// success=false and discards Gitea's explanatory body, so the reason has to be
-// re-derived from the PR. Costs one API call, on the failure path only.
-func mergeFailureReason(requestCtx stdctx.Context, client *gitea.Client, repoOwner, repoName string, index int64) string {
-	// Fallback naming the conditions tea cannot observe, used when the PR looks
-	// mergeable but the merge was refused anyway.
-	const refused = "the server refused the merge; check required status checks, requested reviews, or branch protection rules"
-
-	pr, _, err := client.PullRequests.GetPullRequest(requestCtx, repoOwner, repoName, index)
-	if err != nil || pr == nil {
-		return refused
-	}
-
-	switch {
-	case pr.HasMerged:
-		return "it has already been merged"
-	case pr.State == gitea.StateClosed:
-		return "it is closed"
-	case pr.Draft:
-		return "it is a draft; mark it ready for review first"
-	case !pr.Mergeable:
-		return "it has conflicting files or is otherwise not mergeable"
-	default:
-		return refused
-	}
-}