fix(mcp): ограничить очередь NetFlow и защитить чтение истории

backend/src/modules/mcp/diagnostic-cancellation-source.test.ts

@@ -1,6 +1,9 @@
 import assert from "node:assert/strict"
 import { createHash, randomUUID } from "node:crypto"
-import { createDiagnosticCancellationSourceForTests, createReadServerProbeExecutionSourceForTests } from "./diagnostic-cancellation-source.js"
+import { mkdtemp, readdir, rm, rmdir } from "node:fs/promises"
+import { tmpdir } from "node:os"
+import { join } from "node:path"
+import { createDiagnosticCancellationSourceForTests, createReadServerProbeExecutionSourceForTests, readServerProbeExecutionSource } from "./diagnostic-cancellation-source.js"
 import { fingerprint, redact } from "./security.js"
 
 const proof = async (value: unknown) => createHash("sha256").update(fingerprint(value)).digest("hex")
@@ -25,6 +28,7 @@ function fixture() {
     return { rows }
   } }
   return { load: () => load(client, operationId, owner), read: () => read(snapshot, operationId, owner), readSql,
+    readWithExistingKey: () => readServerProbeExecutionSource(snapshot, operationId, owner),
     refresh, binding, input, evidence, row, sealed, setRows: (value: typeof rows) => { rows=value }, calls: () => calls, operationId, credentialId }
 }
 {
@@ -100,4 +104,22 @@ for (const mutate of mutations) {
   assert.equal(source.originalContext.tool, "bandwidth"); assert.equal(source.stageBudget, 1)
   assert.equal(source.originalContext.identity.credentialId, f.credentialId)
 }
-console.log(`diagnostic-cancellation-source: locked/read-only source, expired original contexts and ${mutations.length} shared tamper checks passed`)
+{
+  const state = await mkdtemp(join(tmpdir(), "mm-legacy-source-test-"))
+  const previousState = process.env.MCP_STATE_DIR
+  process.env.MCP_STATE_DIR = state
+  try {
+    const f = fixture()
+    await f.refresh()
+    f.row.evidence = { sealed: Buffer.alloc(32).toString("base64") }
+    await assert.rejects(f.readWithExistingKey, { code: "STATE_CONFLICT" })
+    assert.equal(f.readSql.length, 1)
+    assert.deepEqual(await readdir(state), [], "Historical source reads must leave missing encryption state untouched")
+  } finally {
+    if (previousState === undefined) delete process.env.MCP_STATE_DIR
+    else process.env.MCP_STATE_DIR = previousState
+    await rm(join(state, "encryption-key"), { force: true })
+    await rmdir(state)
+  }
+}
+console.log(`diagnostic-cancellation-source: locked/read-only source, missing key, expired original contexts and ${mutations.length} shared tamper checks passed`)

backend/src/modules/mcp/diagnostic-cancellation-source.ts

@@ -3,7 +3,7 @@ import type { ProbeStorageScope, ProbeStorageSql } from "../../services/server-p
 import type { ServerProbeJournalContext } from "../../services/server-probe-journal.js"
 import { SERVER_PROBE_OPERATION } from "../../services/server-probe-authority.js"
 import { openServerProbeMcpBinding } from "./server-probe-actions.js"
-import { decryptSecret, fingerprint, privateSecretFingerprint, redact, McpError } from "./security.js"
+import { decryptSecret, decryptSecretExisting, fingerprint, privateFingerprinterExisting, privateSecretFingerprint, redact, McpError } from "./security.js"
 
 const MAX_BYTES = 2097152
 const uuid = z.string().uuid()
@@ -113,7 +113,10 @@ export const loadDiagnosticCancellationSource = sourceLoader(productionCrypto)
 /** Test-only crypto seam. Never accept these dependencies from tool JSON. */
 export const createDiagnosticCancellationSourceForTests = sourceLoader
 /** Historical authentication only; confers no execution/cancellation grant. */
-export const readServerProbeExecutionSource = readSourceLoader(productionCrypto)
+export const readServerProbeExecutionSource = readSourceLoader({
+  open: decryptSecretExisting,
+  proof: async value => (await privateFingerprinterExisting("server-probe-mcp-binding-v1"))(fingerprint(value)),
+})
 export const createReadServerProbeExecutionSourceForTests = readSourceLoader
 /** Exact previously locked source projection for private history conversion. */
 export function authenticateServerProbeExecutionSourceRow(row: Record<string, unknown>, operationId: string,