Re-vendor the canonical files from sneak/prompts at dd4027b (closes #213)

Linting and testing become the lint and test phases of the Dockerfile,
and the build stage depends on both. Dockerfile.lint, CHECK_EPOCH and
the tests that checked them are removed. Every docker build in script/
passes --no-cache, and script/cibuild runs script/bootstrap first, which
now fetches apt package lists so a fresh CI runner can install Go. The
image takes its version from the VERSION build arg or git describe, and
still stamps the commit and its date from .git. The golangci-lint
v2.14.0 findings are fixed in the code. The rules in CLAUDE.md move into
AGENTS.md. IsDevVersion now counts "unknown", the version script/docker
stamps outside a git checkout.

Model: opus-5-5

internal/config/size.go

@@ -16,8 +16,6 @@ var (
 // Size represents a byte size that can be specified in configuration files.
 // It can unmarshal from both numeric values (interpreted as bytes) and
 // human-readable strings like "10MB", "2.5GB", or "1TB".
-//
-//nolint:recvcheck // UnmarshalYAML requires a pointer; String/Int64 are value reads
 type Size int64
 
 // UnmarshalYAML implements yaml.Unmarshaler for Size, allowing it to be

internal/database/chunk_files.go

@@ -220,7 +220,7 @@ func (r *ChunkFileRepository) CreateBatch(
 				cf.ChunkHash.String(), cf.FileID.String(), cf.FileOffset, cf.Length)
 		}
 
-		query += querySb183.String() //nolint:gosec // G202: appends "?" placeholders only
+		query += querySb183.String()
 
 		query += " ON CONFLICT(chunk_hash, file_id) DO NOTHING"
 

internal/database/chunks.go

@@ -98,7 +98,7 @@ func (r *ChunkRepository) GetByHashes(
 		args[i] = hash
 	}
 
-	query += querySb75.String() //nolint:gosec // G202: appends "?" placeholders only
+	query += querySb75.String()
 
 	query += ") ORDER BY chunk_hash"
 

internal/database/file_chunks.go

@@ -253,7 +253,7 @@ func (r *FileChunkRepository) CreateBatch(
 			args = append(args, fc.FileID.String(), fc.Idx, fc.ChunkHash.String())
 		}
 
-		query += querySb211.String() //nolint:gosec // G202: appends "?" placeholders only
+		query += querySb211.String()
 
 		query += " ON CONFLICT(file_id, idx) DO NOTHING"
 

internal/database/files.go

@@ -341,7 +341,7 @@ func (r *FileRepository) CreateBatch(
 				f.LinkTarget.String())
 		}
 
-		query += querySb325.String() //nolint:gosec // G202: appends "?" placeholders only
+		query += querySb325.String()
 
 		query += ` ON CONFLICT(path) DO UPDATE SET
 			source_path = excluded.source_path,

internal/database/snapshots.go

@@ -395,7 +395,7 @@ func (r *SnapshotRepository) AddFilesByIDBatch(
 			args = append(args, snapshotID, fileID.String())
 		}
 
-		query += querySb312.String() //nolint:gosec // G202: appends "?" placeholders only
+		query += querySb312.String()
 
 		var err error
 		if tx != nil {

internal/globals/globals.go

@@ -72,9 +72,12 @@ func New() (*Globals, error) {
 // safe reading of "we could not establish that this is a release" is
 // that it is not one. The Makefile refuses to build at all in that
 // case; this is the second line of defence, for a binary linked by
-// something other than the Makefile.
+// something other than the Makefile. "unknown" counts for the same
+// reason: script/docker and script/cibuild stamp it when the host has
+// no git checkout.
 func IsDevVersion(v string) bool {
-	if v == "" || v == DevVersion || strings.HasPrefix(v, DevVersion+"-") ||
+	if v == "" || v == "unknown" || v == DevVersion ||
+		strings.HasPrefix(v, DevVersion+"-") ||
 		strings.HasSuffix(v, "-dirty") {
 		return true
 	}

internal/globals/globals_test.go

@@ -74,6 +74,9 @@ func TestIsDevVersion(t *testing.T) {
 		// as one. The Makefile refuses to build when script/version
 		// yields nothing; this covers a binary linked some other way.
 		{"", true},
+		// What script/docker and script/cibuild stamp when the host
+		// has no git checkout.
+		{"unknown", true},
 	}
 
 	for _, tc := range cases {

internal/snapshot/scanner.go

@@ -1345,8 +1345,7 @@ func (s *Scanner) processFileWithErrorHandling(
 		// record a file whose chunk is in no blob and cannot be restored, so
 		// abort the run even under --skip-errors. Only open and read errors
 		// are skipped below.
-		var pErr *packerError
-		if errors.As(err, &pErr) {
+		if _, ok := errors.AsType[*packerError](err); ok {
 			return false, fmt.Errorf("processing file %s: %w", fileToProcess.Path, err)
 		}
 		// Handle files that were deleted between scan and process phases

internal/storage/url.go

@@ -161,8 +161,7 @@ func rejectUnknownParams(query url.Values, allowed ...string) error {
 // *url.Error that url.Parse returns embeds the raw URL in its message, so
 // wrapping it directly would echo a credential-bearing URL into logs.
 func wrapParseError(err error) error {
-	var uerr *url.Error
-	if errors.As(err, &uerr) {
+	if uerr, ok := errors.AsType[*url.Error](err); ok {
 		return fmt.Errorf("invalid URL: %w", uerr.Err)
 	}