feat: add prune subcommand, drop archived/stale entries (#1441)

* feat: add prune subcommand, drop archived/stale entries, add container-explorer

Add a new `awesome-docker prune` subcommand that removes README entries
whose repository health status matches a configurable set (default:
archived,stale). URLs are read from the local health cache, or from a
markdown report file via --from-report when the cache is outdated.

Apply it against the issue #1439 health report to remove 5 entries
that survived the recent reorg: stitchocker, docker-consul,
blockbridge-docker-volume, docker-explorer, dockdash.

Add google/container-explorer in the Security section as the actively
maintained successor to the now-archived google/docker-explorer.

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

* golangci-lint config

* fix: address golangci-lint findings

Fixes errcheck on bufio.Writer.WriteString, gocritic rangeValCopy via
indexed loops with pointer locals, gosec G703 on user-supplied CLI
output path, noctx by switching to exec.CommandContext with a timeout
in the TUI url opener, prealloc in the scorer test, plus fieldalignment
struct reorders and golines line breaks from --fix.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

---------

Co-authored-by: Claude <noreply@anthropic.com>

internal/checker/github.go

@@ -13,15 +13,15 @@ import (
 
 // RepoInfo holds metadata about a GitHub repository.
 type RepoInfo struct {
+	PushedAt   time.Time
 	Owner      string
 	Name       string
 	URL        string
+	Stars      int
+	Forks      int
 	IsArchived bool
 	IsDisabled bool
 	IsPrivate  bool
-	PushedAt   time.Time
-	Stars      int
-	Forks      int
 	HasLicense bool
 }
 
@@ -104,19 +104,17 @@ func NewGitHubChecker(token string) *GitHubChecker {
 func (gc *GitHubChecker) CheckRepo(ctx context.Context, owner, name string) (RepoInfo, error) {
 	var query struct {
 		Repository struct {
+			PushedAt       time.Time
+			LicenseInfo    *struct{ Name string }
+			StargazerCount int
+			ForkCount      int
 			IsArchived     bool
 			IsDisabled     bool
 			IsPrivate      bool
-			PushedAt       time.Time
-			StargazerCount int
-			ForkCount      int
-			LicenseInfo    *struct {
-				Name string
-			}
 		} `graphql:"repository(owner: $owner, name: $name)"`
 	}
 
-	vars := map[string]interface{}{
+	vars := map[string]any{
 		"owner": githubv4.String(owner),
 		"name":  githubv4.String(name),
 	}