FORGE-WP-ADHOC-2026-10-27: allow filename content digests in the receive scanner

The pinned Gitleaks profile now ignores one generic-api-key match: a text-extension filename whose value is exactly 64 lowercase hex digits. A bare keyword assignment of that digest still blocks. The installed Forgejo adapter is unchanged.

Assistant: grok
Assistant-Model: grok-4.7
Assistant-Session: 01a17f2b-8cc3-76f0-9bce-3b3444b9a5e9

WORK-RECORDS.md

@@ -8,6 +8,7 @@
 
 | Kind | ID | Status | Lane | Source |
 | --- | --- | --- | --- | --- |
+| workplan | FORGE-WP-ADHOC-2026-10-27 | active | — | workplans/ADHOC-2026-10-27.md |
 | workplan | FORGE-WP-0006 | finished | — | workplans/FORGE-WP-0006-independent-secret-detection.md |
 | workplan | FORGE-WP-0007 | finished | — | workplans/FORGE-WP-0007-reuse-private-reader-contract-review.md |
 | workplan | FORGE-WP-0008 | proposed | — | workplans/FORGE-WP-0008-secret-detection-residual-coverage.md |
@@ -15,6 +16,8 @@
 | workplan | FORGE-WP-0010 | finished | — | workplans/FORGE-WP-0010-receive-scanner-budget.md |
 | workplan | FORGE-WP-0011 | active | — | workplans/FORGE-WP-0011-forgejo-resource-requests.md |
 | workplan | RFORGE-WP-0002 | finished | — | workplans/RFORGE-WP-0002-forge-resource-economics-evidence.md |
+| task | FORGE-WP-ADHOC-2026-10-27-T01 | done | — | workplans/ADHOC-2026-10-27.md |
+| task | FORGE-WP-ADHOC-2026-10-27-T02 | wait | — | workplans/ADHOC-2026-10-27.md |
 | task | FORGE-WP-0006-T01 | done | — | workplans/FORGE-WP-0006-independent-secret-detection.md |
 | task | FORGE-WP-0006-T02 | done | — | workplans/FORGE-WP-0006-independent-secret-detection.md |
 | task | FORGE-WP-0006-T03 | cancel | — | workplans/FORGE-WP-0006-independent-secret-detection.md |

docs/receive-secret-detection.md

@@ -56,8 +56,14 @@ names; the adapter does not make Git's transport diagnostics a secret-safe log.
 
 Exit 0 is `clean` in this declared scope; exit 1 is `blocked`; exit 2 is
 `unverified`. Both nonzero statuses must refuse the complete push. There is no
-implicit baseline/ignore or override switch. A false-positive exception needs a
-separate reviewed mechanism with exact scope, approval and expiry.
+implicit baseline/ignore or override switch. Repository configuration cannot
+disable detection. The adapter's private config adds one reviewed
+`generic-api-key` match allowlist: a filename with a normal text extension
+(`.md`, `.markdown`, `.txt`, `.yaml`, `.yml`, `.json`, `.py`, or `.toml`) whose
+value is exactly 64 lowercase hex digits. A bare keyword assignment of that
+same digest still blocks. Any wider exception needs a separate reviewed
+mechanism with exact scope, approval and expiry. Keep this profile identical
+to Repo Manager's staged-scan config.
 
 ## Bounds and remaining coverage
 

tools/receive-secret-scan/batch_test.go

@@ -159,9 +159,14 @@ func TestSmallInputParity(t *testing.T) {
 		}
 	}()
 	config := t.TempDir()
-	write(t, filepath.Join(config, "scanner.toml"), []byte("[extend]\nuseDefault = true\n"))
+	write(t, filepath.Join(config, "scanner.toml"), []byte(scannerConfig))
 	write(t, filepath.Join(config, "ignore"), nil)
 	privateKey := key(t)
+	var digestRaw [32]byte
+	if _, err := rand.Read(digestRaw[:]); err != nil {
+		t.Fatal("cannot generate synthetic digest")
+	}
+	digest := hex.EncodeToString(digestRaw[:])
 	var random [32]byte
 	if _, err := rand.Read(random[:]); err != nil {
 		t.Fatal("cannot generate synthetic token")
@@ -181,6 +186,8 @@ func TestSmallInputParity(t *testing.T) {
 		{"token", canary, true},
 		{"binary-token", append([]byte{0, 0}, canary...), true},
 		{"inline-suppression", append([]byte("# gitleaks:allow\n"), privateKey...), true},
+		{"filename-digest", []byte("  cards/access.md: " + digest + "\n"), false},
+		{"bare-keyword-digest", []byte("access: " + digest + "\n"), true},
 	} {
 		t.Run(tc.name, func(t *testing.T) {
 			stdin, e := scan(context.Background(), f, config, tc.input)

tools/receive-secret-scan/main.go

@@ -23,6 +23,21 @@ import (
 
 const scannerHash = "88f91962aa2f93ac6ab281d553b9e125f5197bbbce38f9f2437f7299c32e5509"
 const scannerVersion = "8.30.1"
+
+// scannerConfig extends the pinned scanner defaults with one reviewed shape.
+// Keep it identical to repo-manager secret_scan.CONFIG. The allowlist targets
+// the rule match, which is the filename stem through the digest: a trailing
+// newline is sometimes included in the line slice and then a line anchor misses.
+// A bare keyword assignment of the same digest still matches generic-api-key.
+const scannerConfig = `[extend]
+useDefault = true
+
+[[allowlists]]
+description = "Filename key whose value is a lowercase 64-hex content digest"
+targetRules = ["generic-api-key"]
+regexTarget = "match"
+regexes = ['^[\w.-]+\.(?:md|markdown|txt|yaml|yml|json|py|toml):[ \t]+[a-f0-9]{64}$']
+`
 const maxInput = 512 * 1024
 const maxObject = 8 * 1024 * 1024
 const maxTotal = 64 * 1024 * 1024
@@ -333,7 +348,7 @@ func check(ctx context.Context, updates []update, binary string) (out result) {
 		}
 		return nil
 	}
-	if os.WriteFile(filepath.Join(dir, "scanner.toml"), []byte("[extend]\nuseDefault = true\n"), 0600) != nil || os.WriteFile(filepath.Join(dir, "ignore"), nil, 0600) != nil {
+	if os.WriteFile(filepath.Join(dir, "scanner.toml"), []byte(scannerConfig), 0600) != nil || os.WriteFile(filepath.Join(dir, "ignore"), nil, 0600) != nil {
 		return fail(errors.New("scanner-config-unavailable"))
 	}
 	// Ref names can themselves contain recognized tokens. Never echo them.

workplans/ADHOC-2026-10-27.md

@@ -0,0 +1,40 @@
+---
+id: FORGE-WP-ADHOC-2026-10-27
+type: workplan
+title: "Allow filename content digests in the receive scanner"
+domain: financials
+repo: railiance-forge
+status: active
+owner: grok
+created: "2026-10-27"
+updated: "2026-10-27"
+---
+
+## Allow a text-filename digest through generic-api-key
+
+```task
+id: FORGE-WP-ADHOC-2026-10-27-T01
+status: done
+priority: high
+```
+
+The pinned Gitleaks 8.30.1 profile now allowlists one `generic-api-key` match:
+a filename with extension `.md`, `.markdown`, `.txt`, `.yaml`, `.yml`, `.json`,
+`.py`, or `.toml`, whose value is exactly 64 lowercase hex digits. A bare
+keyword assignment of the same digest still blocks, as do uppercase, short,
+quoted, and suffixed values. The profile is `scannerConfig` in
+`tools/receive-secret-scan` and matches Repo Manager's staged-scan config.
+Repository `.gitleaks.toml` files and inline allow comments remain ignored.
+
+## Admit the updated adapter on the forge
+
+```task
+id: FORGE-WP-ADHOC-2026-10-27-T02
+status: wait
+priority: high
+```
+
+Source and the disposable scanner test do not change the installed pre-receive
+adapter. The running Forgejo hook keeps the previous profile until this
+executable is rebuilt and admitted. The emergent-security 0.2.7 push stays
+blocked until that admission.