feat(cli)!: subcommand CLI, graph tree mode, local include resolution

BREAKING CHANGES:
- `glint <file>` removed; use `glint check <file>`
- `--graph <mode>` removed; use `glint graph [mode]`
- `--graph-out` renamed to `--out` on `glint graph`

feat(cli): ruff-style subcommands — `glint check` and `glint graph [mode]`
feat(graph): `glint graph tree` — terminal job tree with context annotations
feat(graph): context flags (--branch/--tag/--source/--var) on `glint graph`
feat(resolver): recursive local include resolution from disk
fix(resolver): extends unknown base emits warning instead of fatal error
fix(model): script/before_script/after_script accept block scalar string form
test(linter): Samba project CI fixtures as integration tests
chore(build): fix .gitignore to not exclude cmd/glint/ directory
docs: update CHANGELOG, README, ROADMAP for v0.2.0

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

internal/graph/tree.go

@@ -0,0 +1,113 @@
+package graph
+
+import (
+	"sort"
+	"strings"
+
+	"git.k3nny.fr/glint/internal/cicontext"
+	"git.k3nny.fr/glint/internal/model"
+)
+
+// Tree returns a tree-command-style text representation of pipeline jobs
+// grouped by stage.
+//
+// Hidden template jobs (names starting with ".") are excluded.
+// When ctx is non-nil and non-empty, each job is annotated with its evaluated
+// state ([skipped] or [manual]); active jobs carry no annotation.
+// Without a context, job-type annotations ([manual], [delayed], [trigger]) are
+// shown instead.
+func Tree(p *model.Pipeline, ctx *cicontext.Context) string {
+	var sb strings.Builder
+
+	// Collect visible jobs.
+	var visible []string
+	for name := range p.Jobs {
+		if !strings.HasPrefix(name, ".") {
+			visible = append(visible, name)
+		}
+	}
+	sort.Strings(visible)
+
+	// Group by stage.
+	byStage := make(map[string][]string)
+	for _, name := range visible {
+		stage := p.Jobs[name].Stage
+		if stage == "" {
+			stage = "test"
+		}
+		byStage[stage] = append(byStage[stage], name)
+	}
+
+	// Build ordered stage list: declared first, then extras.
+	seen := make(map[string]bool)
+	var stages []string
+	for _, s := range p.Stages {
+		if len(byStage[s]) > 0 && !seen[s] {
+			stages = append(stages, s)
+			seen[s] = true
+		}
+	}
+	for _, name := range visible {
+		stage := p.Jobs[name].Stage
+		if stage == "" {
+			stage = "test"
+		}
+		if !seen[stage] {
+			stages = append(stages, stage)
+			seen[stage] = true
+		}
+	}
+
+	sb.WriteString("pipeline\n")
+
+	for si, stage := range stages {
+		lastStage := si == len(stages)-1
+		stagePrefix, childPrefix := branchChars(lastStage)
+
+		sb.WriteString(stagePrefix + stage + "\n")
+
+		jobs := byStage[stage]
+		sort.Strings(jobs)
+		for ji, name := range jobs {
+			lastJob := ji == len(jobs)-1
+			jobBranch, _ := branchChars(lastJob)
+			sb.WriteString(childPrefix + jobBranch + jobLabel(p.Jobs[name], name, ctx) + "\n")
+		}
+	}
+
+	return sb.String()
+}
+
+func branchChars(last bool) (branch, continuation string) {
+	if last {
+		return "└── ", "    "
+	}
+	return "├── ", "│   "
+}
+
+func jobLabel(job model.Job, name string, ctx *cicontext.Context) string {
+	if ctx != nil && !ctx.IsEmpty() {
+		switch cicontext.EvalJob(job, ctx) {
+		case cicontext.JobSkipped:
+			return name + " [skipped]"
+		case cicontext.JobManual:
+			return name + " [manual]"
+		}
+		return name
+	}
+	// No context: annotate by job type.
+	var tags []string
+	if job.When == "manual" {
+		tags = append(tags, "manual")
+	}
+	if job.When == "delayed" {
+		tags = append(tags, "delayed")
+	}
+	if job.Trigger != nil {
+		tags = append(tags, "trigger")
+	}
+	if len(tags) == 0 {
+		return name
+	}
+	return name + " [" + strings.Join(tags, ", ") + "]"
+}