Add tea actions runs and workflows commands (#880)

Implements comprehensive workflow execution tracking for Gitea Actions using tea CLI

## Features

### tea actions runs list
- List workflow runs with filtering (status, branch, event, actor, time)
- Time filters: relative (24h, 7d) and absolute dates
- Status symbols: ✓ success, ✘ failure, ⭮ pending, ⊘ skipped/cancelled, ⚠ blocked
- Multiple output formats: table, json, yaml, csv, tsv

### tea actions runs view
- View run details with metadata (ID, status, workflow, branch, event, trigger info)
- Shows jobs table with status, runner, duration
- Optional --jobs flag to toggle jobs display

### tea actions runs delete
- Delete/cancel workflow runs with confirmation prompt
- Supports --confirm/-y to skip prompt

### tea actions runs logs
- View job logs for all jobs or specific job (--job <id>)
- **New: --follow/-f flag for real-time log following** (like tail -f)
- Polls API every 2 seconds, only shows new content
- Auto-detects completion and exits

### tea actions workflows list
- List workflow files (.yml and .yaml) in repository
- Searches in .gitea/workflows and .github/workflows
- Shows active (✓) or inactive (✗) status based on recent runs
- Displays workflow name, path, and file size

## Commands

`tea actions runs list --status success --since 24h`
`tea actions runs view 123`
`tea actions runs delete 123 --confirm`
`tea actions runs logs 123 --job 456 --follow`
`tea actions workflows list`

## Tests
- 19 unit tests across all commands
- Full test suite passing
- Manual testing successful

---------

Co-authored-by: Lunny Xiao <xiaolunwen@gmail.com>
Co-authored-by: techknowlogick <techknowlogick@gitea.com>
Reviewed-on: https://gitea.com/gitea/tea/pulls/880
Reviewed-by: Lunny Xiao <xiaolunwen@gmail.com>
Co-authored-by: yousfi saad <yousfi.saad@gmail.com>
Co-committed-by: yousfi saad <yousfi.saad@gmail.com>

cmd/actions/runs/list_test.go

@@ -0,0 +1,77 @@
+// Copyright 2026 The Gitea Authors. All rights reserved.
+// SPDX-License-Identifier: MIT
+
+package runs
+
+import (
+	"testing"
+	"time"
+
+	"code.gitea.io/sdk/gitea"
+)
+
+func TestFilterRunsByTime(t *testing.T) {
+	now := time.Now()
+	runs := []*gitea.ActionWorkflowRun{
+		{ID: 1, StartedAt: now.Add(-1 * time.Hour)},
+		{ID: 2, StartedAt: now.Add(-2 * time.Hour)},
+		{ID: 3, StartedAt: now.Add(-3 * time.Hour)},
+		{ID: 4, StartedAt: now.Add(-4 * time.Hour)},
+		{ID: 5, StartedAt: now.Add(-5 * time.Hour)},
+	}
+
+	tests := []struct {
+		name     string
+		since    time.Time
+		until    time.Time
+		expected []int64
+	}{
+		{
+			name:     "no filter",
+			since:    time.Time{},
+			until:    time.Time{},
+			expected: []int64{1, 2, 3, 4, 5},
+		},
+		{
+			name:     "since 2.5 hours ago",
+			since:    now.Add(-150 * time.Minute),
+			until:    time.Time{},
+			expected: []int64{1, 2},
+		},
+		{
+			name:     "until 2.5 hours ago",
+			since:    time.Time{},
+			until:    now.Add(-150 * time.Minute),
+			expected: []int64{3, 4, 5},
+		},
+		{
+			name:     "between 2 and 4 hours ago",
+			since:    now.Add(-4 * time.Hour),
+			until:    now.Add(-2 * time.Hour),
+			expected: []int64{2, 3, 4},
+		},
+		{
+			name:     "filter excludes all",
+			since:    now.Add(-30 * time.Minute),
+			until:    time.Time{},
+			expected: []int64{},
+		},
+	}
+
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			result := filterRunsByTime(runs, tt.since, tt.until)
+
+			if len(result) != len(tt.expected) {
+				t.Errorf("filterRunsByTime() returned %d runs, want %d", len(result), len(tt.expected))
+				return
+			}
+
+			for i, run := range result {
+				if run.ID != tt.expected[i] {
+					t.Errorf("filterRunsByTime()[%d].ID = %d, want %d", i, run.ID, tt.expected[i])
+				}
+			}
+		})
+	}
+}