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/lock.go

@@ -1,85 +0,0 @@
-// Copyright 2026 The Gitea Authors. All rights reserved.
-// SPDX-License-Identifier: MIT
-
-package config
-
-import (
-	"fmt"
-	"sync"
-	"time"
-
-	"gitea.dev/tea/modules/filelock"
-)
-
-const (
-	// LockTimeout is the default timeout for acquiring the config file lock.
-	LockTimeout = 5 * time.Second
-
-	// mutexPollInterval is how often to retry acquiring the in-process mutex.
-	mutexPollInterval = 10 * time.Millisecond
-)
-
-// configMutex protects in-process concurrent access to the config.
-var configMutex sync.Mutex
-
-// acquireConfigLock acquires both the in-process mutex and a file lock.
-// Returns an unlock function that must be called to release both locks.
-// The timeout applies to acquiring the file lock; the mutex acquisition
-// uses the same timeout via a TryLock loop.
-func acquireConfigLock(lockPath string, timeout time.Duration) (unlock func() error, err error) {
-	// Try to acquire mutex with timeout
-	deadline := time.Now().Add(timeout)
-	for {
-		if configMutex.TryLock() {
-			break
-		}
-		if time.Now().After(deadline) {
-			return nil, fmt.Errorf("timeout waiting for config mutex")
-		}
-		time.Sleep(mutexPollInterval)
-	}
-
-	// Mutex acquired, now try file lock
-	remaining := max(time.Until(deadline), 0)
-	locker := filelock.New(lockPath, remaining)
-
-	fileUnlock, err := locker.Acquire()
-	if err != nil {
-		configMutex.Unlock()
-		return nil, err
-	}
-
-	// Return unlock function
-	return func() error {
-		unlockErr := fileUnlock()
-		configMutex.Unlock()
-		return unlockErr
-	}, nil
-}
-
-// getConfigLockPath returns the path to the lock file for the config.
-func getConfigLockPath() string {
-	return GetConfigPath() + ".lock"
-}
-
-// withConfigLock executes the given function while holding the config lock.
-// It acquires the lock, reloads the config from disk, executes fn, and releases the lock.
-func withConfigLock(fn func() error) (retErr error) {
-	lockPath := getConfigLockPath()
-	unlock, err := acquireConfigLock(lockPath, LockTimeout)
-	if err != nil {
-		return fmt.Errorf("failed to acquire config lock: %w", err)
-	}
-	defer func() {
-		if unlockErr := unlock(); unlockErr != nil && retErr == nil {
-			retErr = fmt.Errorf("failed to release config lock: %w", unlockErr)
-		}
-	}()
-
-	// Reload config from disk to get latest state
-	if err := reloadConfigFromDisk(); err != nil {
-		return err
-	}
-
-	return fn()
-}