feat: add core-lint CLI with check, catalog list, catalog show

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

.gitignore

@@ -0,0 +1 @@
+bin/

cmd/core-lint/main.go

@@ -0,0 +1,172 @@
+package main
+
+import (
+	"encoding/json"
+	"fmt"
+	"os"
+	"strings"
+
+	"forge.lthn.ai/core/cli/pkg/cli"
+	lint "forge.lthn.ai/core/lint"
+	lintpkg "forge.lthn.ai/core/lint/pkg/lint"
+)
+
+func main() {
+	cli.WithAppName("core-lint")
+	cli.Main(cli.WithCommands("lint", addLintCommands))
+}
+
+func addLintCommands(root *cli.Command) {
+	lintCmd := cli.NewGroup("lint", "Pattern-based code linter", "")
+
+	// ── check ──────────────────────────────────────────────────────────────
+	var (
+		checkFormat   string
+		checkLang     string
+		checkSeverity string
+	)
+
+	checkCmd := cli.NewCommand("check", "Scan files for pattern matches", "", func(cmd *cli.Command, args []string) error {
+		cat, err := lint.LoadEmbeddedCatalog()
+		if err != nil {
+			return fmt.Errorf("loading catalog: %w", err)
+		}
+
+		rules := cat.Rules
+
+		// Filter by language if specified.
+		if checkLang != "" {
+			rules = cat.ForLanguage(checkLang)
+			if len(rules) == 0 {
+				fmt.Fprintf(os.Stderr, "no rules for language %q\n", checkLang)
+				return nil
+			}
+		}
+
+		// Filter by severity threshold if specified.
+		if checkSeverity != "" {
+			filtered := (&lintpkg.Catalog{Rules: rules}).AtSeverity(checkSeverity)
+			if len(filtered) == 0 {
+				fmt.Fprintf(os.Stderr, "no rules at severity %q or above\n", checkSeverity)
+				return nil
+			}
+			rules = filtered
+		}
+
+		scanner, err := lintpkg.NewScanner(rules)
+		if err != nil {
+			return fmt.Errorf("creating scanner: %w", err)
+		}
+
+		paths := args
+		if len(paths) == 0 {
+			paths = []string{"."}
+		}
+
+		var allFindings []lintpkg.Finding
+		for _, p := range paths {
+			info, err := os.Stat(p)
+			if err != nil {
+				return fmt.Errorf("stat %s: %w", p, err)
+			}
+
+			var findings []lintpkg.Finding
+			if info.IsDir() {
+				findings, err = scanner.ScanDir(p)
+			} else {
+				findings, err = scanner.ScanFile(p)
+			}
+			if err != nil {
+				return err
+			}
+			allFindings = append(allFindings, findings...)
+		}
+
+		switch checkFormat {
+		case "json":
+			return lintpkg.WriteJSON(os.Stdout, allFindings)
+		case "jsonl":
+			return lintpkg.WriteJSONL(os.Stdout, allFindings)
+		default:
+			lintpkg.WriteText(os.Stdout, allFindings)
+		}
+
+		if len(allFindings) > 0 {
+			summary := lintpkg.Summarise(allFindings)
+			fmt.Fprintf(os.Stderr, "\n%d finding(s)", summary.Total)
+			var parts []string
+			for sev, count := range summary.BySeverity {
+				parts = append(parts, fmt.Sprintf("%d %s", count, sev))
+			}
+			if len(parts) > 0 {
+				fmt.Fprintf(os.Stderr, " (%s)", strings.Join(parts, ", "))
+			}
+			fmt.Fprintln(os.Stderr)
+		}
+
+		return nil
+	})
+
+	cli.StringFlag(checkCmd, &checkFormat, "format", "f", "text", "Output format: text, json, jsonl")
+	cli.StringFlag(checkCmd, &checkLang, "lang", "l", "", "Filter rules by language (e.g. go, php, ts)")
+	cli.StringFlag(checkCmd, &checkSeverity, "severity", "s", "", "Minimum severity threshold (info, low, medium, high, critical)")
+
+	// ── catalog ────────────────────────────────────────────────────────────
+	catalogCmd := cli.NewGroup("catalog", "Browse the pattern catalog", "")
+
+	// catalog list
+	var listLang string
+
+	listCmd := cli.NewCommand("list", "List all rules in the catalog", "", func(cmd *cli.Command, args []string) error {
+		cat, err := lint.LoadEmbeddedCatalog()
+		if err != nil {
+			return fmt.Errorf("loading catalog: %w", err)
+		}
+
+		rules := cat.Rules
+		if listLang != "" {
+			rules = cat.ForLanguage(listLang)
+		}
+
+		if len(rules) == 0 {
+			fmt.Println("No rules found.")
+			return nil
+		}
+
+		for _, r := range rules {
+			fmt.Printf("%-14s [%-8s] %s\n", r.ID, r.Severity, r.Title)
+		}
+		fmt.Fprintf(os.Stderr, "\n%d rule(s)\n", len(rules))
+		return nil
+	})
+
+	cli.StringFlag(listCmd, &listLang, "lang", "l", "", "Filter by language")
+
+	// catalog show
+	showCmd := cli.NewCommand("show", "Show details of a specific rule", "", func(cmd *cli.Command, args []string) error {
+		if len(args) == 0 {
+			return fmt.Errorf("rule ID required")
+		}
+
+		cat, err := lint.LoadEmbeddedCatalog()
+		if err != nil {
+			return fmt.Errorf("loading catalog: %w", err)
+		}
+
+		r := cat.ByID(args[0])
+		if r == nil {
+			return fmt.Errorf("rule %q not found", args[0])
+		}
+
+		data, err := json.MarshalIndent(r, "", "  ")
+		if err != nil {
+			return err
+		}
+		fmt.Println(string(data))
+		return nil
+	})
+
+	catalogCmd.AddCommand(listCmd, showCmd)
+	lintCmd.AddCommand(checkCmd, catalogCmd)
+	root.AddCommand(lintCmd)
+}

go.mod

@@ -8,6 +8,55 @@ require (
 )
 
 require (
-	github.com/davecgh/go-spew v1.1.1 // indirect
+	forge.lthn.ai/core/cli v0.2.2 // indirect
-	github.com/pmezard/go-difflib v1.0.0 // indirect
+	forge.lthn.ai/core/go v0.1.0 // indirect
+	forge.lthn.ai/core/go-cache v0.1.0 // indirect
+	forge.lthn.ai/core/go-config v0.1.0 // indirect
+	forge.lthn.ai/core/go-crypt v0.1.0 // indirect
+	forge.lthn.ai/core/go-devops v0.0.3 // indirect
+	forge.lthn.ai/core/go-help v0.1.2 // indirect
+	forge.lthn.ai/core/go-i18n v0.1.0 // indirect
+	forge.lthn.ai/core/go-inference v0.0.2 // indirect
+	forge.lthn.ai/core/go-io v0.0.3 // indirect
+	forge.lthn.ai/core/go-log v0.0.1 // indirect
+	github.com/ProtonMail/go-crypto v1.3.0 // indirect
+	github.com/aymanbagabas/go-osc52/v2 v2.0.1 // indirect
+	github.com/charmbracelet/bubbletea v1.3.10 // indirect
+	github.com/charmbracelet/colorprofile v0.4.2 // indirect
+	github.com/charmbracelet/lipgloss v1.1.1-0.20250404203927-76690c660834 // indirect
+	github.com/charmbracelet/x/ansi v0.11.6 // indirect
+	github.com/charmbracelet/x/cellbuf v0.0.15 // indirect
+	github.com/charmbracelet/x/term v0.2.2 // indirect
+	github.com/clipperhouse/displaywidth v0.11.0 // indirect
+	github.com/clipperhouse/uax29/v2 v2.7.0 // indirect
+	github.com/cloudflare/circl v1.6.3 // indirect
+	github.com/davecgh/go-spew v1.1.2-0.20180830191138-d8f796af33cc // indirect
+	github.com/erikgeiser/coninput v0.0.0-20211004153227-1c3628e74d0f // indirect
+	github.com/fsnotify/fsnotify v1.9.0 // indirect
+	github.com/go-viper/mapstructure/v2 v2.5.0 // indirect
+	github.com/inconshreveable/mousetrap v1.1.0 // indirect
+	github.com/lucasb-eyer/go-colorful v1.3.0 // indirect
+	github.com/mattn/go-isatty v0.0.20 // indirect
+	github.com/mattn/go-localereader v0.0.1 // indirect
+	github.com/mattn/go-runewidth v0.0.20 // indirect
+	github.com/muesli/ansi v0.0.0-20230316100256-276c6243b2f6 // indirect
+	github.com/muesli/cancelreader v0.2.2 // indirect
+	github.com/muesli/termenv v0.16.0 // indirect
+	github.com/pelletier/go-toml/v2 v2.2.4 // indirect
+	github.com/pmezard/go-difflib v1.0.1-0.20181226105442-5d4384ee4fb2 // indirect
+	github.com/rivo/uniseg v0.4.7 // indirect
+	github.com/sagikazarmark/locafero v0.12.0 // indirect
+	github.com/spf13/afero v1.15.0 // indirect
+	github.com/spf13/cast v1.10.0 // indirect
+	github.com/spf13/cobra v1.10.2 // indirect
+	github.com/spf13/pflag v1.0.10 // indirect
+	github.com/spf13/viper v1.21.0 // indirect
+	github.com/subosito/gotenv v1.6.0 // indirect
+	github.com/xo/terminfo v0.0.0-20220910002029-abceb7e1c41e // indirect
+	github.com/yuin/goldmark v1.7.16 // indirect
+	go.yaml.in/yaml/v3 v3.0.4 // indirect
+	golang.org/x/crypto v0.48.0 // indirect
+	golang.org/x/sys v0.41.0 // indirect
+	golang.org/x/term v0.40.0 // indirect
+	golang.org/x/text v0.34.0 // indirect
 )

go.sum

@@ -1,9 +1,117 @@
+forge.lthn.ai/core/cli v0.2.2 h1:8J/SsewusYFDqjYTC4MikUX1sB9Yqs79Xg4lXxZoSgc=
+forge.lthn.ai/core/cli v0.2.2/go.mod h1:I/V7UFYHv8YVHf9zvbZ9/acT1dAug2B0xLE/L4Ay7Dw=
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+forge.lthn.ai/core/go-cache v0.1.0 h1:yxPf4bWPZ1jxMnXg8UHBv2xLhet2CRsq5E9PLQYjyj4=
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+forge.lthn.ai/core/go-config v0.1.0 h1:bQnlt8MvFvgPisl//jw4IMHMoCcaIt5FLurwYWqlMx0=
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+forge.lthn.ai/core/go-help v0.1.2 h1:JP8hhJDAvfjvPuCyLRbU/VEm7YkENAs8debItLkon3w=
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+forge.lthn.ai/core/go-io v0.0.3/go.mod h1:ZlU9OQpsvNFNmTJoaHbFIkisZyc0eCq0p8znVWQLRf0=
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+forge.lthn.ai/core/go-log v0.0.1/go.mod h1:r14MXKOD3LF/sI8XUJQhRk/SZHBE7jAFVuCfgkXoZPw=
+forge.lthn.ai/core/go-scm v0.0.2 h1:Ue+gS5vxZkDgTvQrqYu9QdaqEezuTV1kZY3TMqM2uho=
+github.com/ProtonMail/go-crypto v1.3.0 h1:ILq8+Sf5If5DCpHQp4PbZdS1J7HDFRXz/+xKBiRGFrw=
+github.com/ProtonMail/go-crypto v1.3.0/go.mod h1:9whxjD8Rbs29b4XWbB8irEcE8KHMqaR2e7GWU1R+/PE=
+github.com/aymanbagabas/go-osc52/v2 v2.0.1 h1:HwpRHbFMcZLEVr42D4p7XBqjyuxQH5SMiErDT4WkJ2k=
+github.com/aymanbagabas/go-osc52/v2 v2.0.1/go.mod h1:uYgXzlJ7ZpABp8OJ+exZzJJhRNQ2ASbcXHWsFqH8hp8=
+github.com/charmbracelet/bubbletea v1.3.10 h1:otUDHWMMzQSB0Pkc87rm691KZ3SWa4KUlvF9nRvCICw=
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+github.com/charmbracelet/lipgloss v1.1.1-0.20250404203927-76690c660834/go.mod h1:aKC/t2arECF6rNOnaKaVU6y4t4ZeHQzqfxedE/VkVhA=
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lint.go

@@ -0,0 +1,16 @@
+// Package lint provides an embedded pattern catalog for code quality checks.
+package lint
+
+import (
+	"embed"
+
+	lintpkg "forge.lthn.ai/core/lint/pkg/lint"
+)
+
+//go:embed catalog/*.yaml
+var catalogFS embed.FS
+
+// LoadEmbeddedCatalog returns a Catalog loaded from the embedded YAML files.
+func LoadEmbeddedCatalog() (*lintpkg.Catalog, error) {
+	return lintpkg.LoadFS(catalogFS, "catalog")
+}