S00-003: Record blocked task and remediation handoff

Changes: Preserve incomplete work and blocker metadata for S00-003. This checkpoint does not mark implementation accepted.
Validation: Session ended with status blocked.
Blocker: S00-003 cannot attest parser limits: Stanza 12.22.1 exposes no resource bounds and its persistent WebSocket parser accepts large/deep XML and reassembles incomplete documents across separate input messages.

Task: S00-003
Agent: auto-protocol-902594b44429
Role: protocol
Action: claim
Status: blocked

Task title: Проверить XMPP WSS/auth библиотеку

planning/ROADMAP.md

@@ -6,7 +6,7 @@
 
 Зафиксировать Web scope, browser targets и проверенные кандидаты, не устанавливая непроверенный framework по догадке.
 
-Задач: 17; entry: нет; exit: S00-010.
+Задач: 18; entry: нет; exit: S00-010.
 
 ## [S01: Предметные контракты](stages/S01.md)
 

planning/TASK_MATRIX.md

@@ -1,12 +1,12 @@
 # Матрица задач
 
-Generated; state revision **41**. Canonical status: state/tasks.json.
+Generated; state revision **43**. Canonical status: state/tasks.json.
 
 | ID | Этап | Оператор | Reviewer | Статус | Owner | Зависимости | Задача |
 | --- | --- | --- | --- | --- | --- | --- | --- |
 | [S00-001](tasks/S00-001.md) | S00 | orchestrator | security | done | auto-orchestrator-48aab142ecde |  | Утвердить Web-профиль |
 | [S00-002](tasks/S00-002.md) | S00 | orchestrator | security | done | auto-orchestrator-68a05c587e33 | S00-001, S00-011, S00-012 | Выбрать framework и build runtime |
-| [S00-003](tasks/S00-003.md) | S00 | protocol | qa | todo |  | S00-001, S00-002, S00-017 | Проверить XMPP WSS/auth библиотеку |
+| [S00-003](tasks/S00-003.md) | S00 | protocol | qa | blocked | auto-protocol-902594b44429 | S00-001, S00-002, S00-017, S00-018 | Проверить XMPP WSS/auth библиотеку |
 | [S00-004](tasks/S00-004.md) | S00 | crypto | security | todo |  | S00-001, S00-002 | Проверить browser OMEMO backend |
 | [S00-005](tasks/S00-005.md) | S00 | storage | qa | todo |  | S00-002 | Выбрать IndexedDB wrapper и migration policy |
 | [S00-006](tasks/S00-006.md) | S00 | orchestrator | security | todo |  | S00-002 | Зафиксировать browser/reference matrix |
@@ -20,6 +20,7 @@ Generated; state revision **41**. Canonical status: state/tasks.json.
 | [S00-015](tasks/S00-015.md) | S00 | ci-cd | qa | done | auto-ci-cd-84e209103f24 | S00-001, S00-011, S00-013, S00-014, S00-016 | Устранить прерывание: Fix runner prompt delivery after partial stdin timeout |
 | [S00-016](tasks/S00-016.md) | S00 | ci-cd | qa | done | auto-ci-cd-351a0cbbabef | S00-001, S00-011, S00-013, S00-014 | Restore reviewer model availability after provider capacity failure |
 | [S00-017](tasks/S00-017.md) | S00 | protocol | security | done | auto-protocol-599343cd9e3f | S00-001, S00-002 | Establish fail-closed SCRAM server-final validation |
+| [S00-018](tasks/S00-018.md) | S00 | protocol | security | todo |  | S00-001, S00-002, S00-017 | Validate bounded standalone XML ingress for the XMPP candidate |
 | [S00-010](tasks/S00-010.md) | S00 | qa | orchestrator | todo |  | S00-001, S00-002, S00-003, S00-004, S00-005, S00-006, S00-007, S00-008, S00-009 | Gate: Профиль и проверка стека |
 | [S01-001](tasks/S01-001.md) | S01 | orchestrator | security | todo |  | S00-010 | Описать identity/model contracts |
 | [S01-002](tasks/S01-002.md) | S01 | orchestrator | security | todo |  | S00-010, S01-001 | Описать async account context |

planning/TRACEABILITY.md

@@ -14,7 +14,7 @@ Allocated означает наличие плана/приёмки, а не р
 | ACC-001 | web | Web requirement; cross-platform clauses apply only in Web context. | S06-003, S21-001 |
 | ACC-002 | web | Web requirement; cross-platform clauses apply only in Web context. | S06-001, S21-001 |
 | ACC-003 | out_of_scope | Native host/port TCP configuration; Web uses ACC-004 WSS. |  |
-| ACC-004 | web | Web requirement; cross-platform clauses apply only in Web context. | S00-003, S00-017, S05-001, S06-003, S21-001 |
+| ACC-004 | web | Web requirement; cross-platform clauses apply only in Web context. | S00-003, S00-017, S00-018, S05-001, S06-003, S21-001 |
 | ACC-005 | web | Web requirement; cross-platform clauses apply only in Web context. | S05-001, S06-011, S21-001 |
 | ACC-006 | web | Web requirement; cross-platform clauses apply only in Web context. | S06-003, S06-004, S21-001 |
 | ACC-007 | web | Web requirement; cross-platform clauses apply only in Web context. | S06-002, S06-009, S20-008, S21-001 |
@@ -27,8 +27,8 @@ Allocated означает наличие плана/приёмки, а не р
 | ACC-014 | web | Web requirement; cross-platform clauses apply only in Web context. | S01-002, S02-010, S06-006, S06-010, S21-001 |
 | NET-001 | web | Web requirement; cross-platform clauses apply only in Web context. | S02-008, S05-001, S05-002, S05-009, S21-001 |
 | NET-002 | out_of_scope | Native transport discovery; Web WSS addressed by ACC-004/NET-001. |  |
-| NET-003 | web | Web requirement; cross-platform clauses apply only in Web context. | S00-003, S00-017, S05-003, S21-001 |
-| NET-004 | web | Web requirement; cross-platform clauses apply only in Web context. | S00-003, S00-017, S05-003, S05-009, S21-001 |
+| NET-003 | web | Web requirement; cross-platform clauses apply only in Web context. | S00-003, S00-017, S00-018, S05-003, S21-001 |
+| NET-004 | web | Web requirement; cross-platform clauses apply only in Web context. | S00-003, S00-017, S00-018, S05-003, S05-009, S21-001 |
 | NET-005 | web | Web requirement; cross-platform clauses apply only in Web context. | S05-004, S21-001 |
 | NET-006 | web | Web requirement; cross-platform clauses apply only in Web context. | S05-002, S05-010, S06-004, S20-002, S21-001 |
 | NET-007 | web | Web requirement; cross-platform clauses apply only in Web context. | S05-007, S21-001 |

planning/stages/S00.md

@@ -8,7 +8,7 @@
 
 - [S00-001](../tasks/S00-001.md): Утвердить Web-профиль — orchestrator; done.
 - [S00-002](../tasks/S00-002.md): Выбрать framework и build runtime — orchestrator; done.
-- [S00-003](../tasks/S00-003.md): Проверить XMPP WSS/auth библиотеку — protocol; todo.
+- [S00-003](../tasks/S00-003.md): Проверить XMPP WSS/auth библиотеку — protocol; blocked.
 - [S00-004](../tasks/S00-004.md): Проверить browser OMEMO backend — crypto; todo.
 - [S00-005](../tasks/S00-005.md): Выбрать IndexedDB wrapper и migration policy — storage; todo.
 - [S00-006](../tasks/S00-006.md): Зафиксировать browser/reference matrix — orchestrator; todo.
@@ -22,6 +22,7 @@
 - [S00-015](../tasks/S00-015.md): Устранить прерывание: Fix runner prompt delivery after partial stdin timeout — ci-cd; done.
 - [S00-016](../tasks/S00-016.md): Restore reviewer model availability after provider capacity failure — ci-cd; done.
 - [S00-017](../tasks/S00-017.md): Establish fail-closed SCRAM server-final validation — protocol; done.
+- [S00-018](../tasks/S00-018.md): Validate bounded standalone XML ingress for the XMPP candidate — protocol; todo.
 - [S00-010](../tasks/S00-010.md): Gate: Профиль и проверка стека — qa; todo.
 
 ## Граница этапа

planning/task_matrix.csv

@@ -1,7 +1,7 @@
 id,stage,operator,reviewer,status,owner,depends_on,title
 S00-001,S00,orchestrator,security,done,auto-orchestrator-48aab142ecde,,Утвердить Web-профиль
 S00-002,S00,orchestrator,security,done,auto-orchestrator-68a05c587e33,"S00-001, S00-011, S00-012",Выбрать framework и build runtime
-S00-003,S00,protocol,qa,todo,,"S00-001, S00-002, S00-017",Проверить XMPP WSS/auth библиотеку
+S00-003,S00,protocol,qa,blocked,auto-protocol-902594b44429,"S00-001, S00-002, S00-017, S00-018",Проверить XMPP WSS/auth библиотеку
 S00-004,S00,crypto,security,todo,,"S00-001, S00-002",Проверить browser OMEMO backend
 S00-005,S00,storage,qa,todo,,S00-002,Выбрать IndexedDB wrapper и migration policy
 S00-006,S00,orchestrator,security,todo,,S00-002,Зафиксировать browser/reference matrix
@@ -15,6 +15,7 @@ S00-014,S00,ci-cd,qa,done,auto-ci-cd-14343249da62,"S00-001, S00-011, S00-013",Fi
 S00-015,S00,ci-cd,qa,done,auto-ci-cd-84e209103f24,"S00-001, S00-011, S00-013, S00-014, S00-016",Устранить прерывание: Fix runner prompt delivery after partial stdin timeout
 S00-016,S00,ci-cd,qa,done,auto-ci-cd-351a0cbbabef,"S00-001, S00-011, S00-013, S00-014",Restore reviewer model availability after provider capacity failure
 S00-017,S00,protocol,security,done,auto-protocol-599343cd9e3f,"S00-001, S00-002",Establish fail-closed SCRAM server-final validation
+S00-018,S00,protocol,security,todo,,"S00-001, S00-002, S00-017",Validate bounded standalone XML ingress for the XMPP candidate
 S00-010,S00,qa,orchestrator,todo,,"S00-001, S00-002, S00-003, S00-004, S00-005, S00-006, S00-007, S00-008, S00-009",Gate: Профиль и проверка стека
 S01-001,S01,orchestrator,security,todo,,S00-010,Описать identity/model contracts
 S01-002,S01,orchestrator,security,todo,,"S00-010, S01-001",Описать async account context

planning/tasks.json

@@ -268,7 +268,8 @@
       "depends_on": [
         "S00-001",
         "S00-002",
-        "S00-017"
+        "S00-017",
+        "S00-018"
       ],
       "requirements": [
         "ACC-004",
@@ -995,6 +996,65 @@
       ],
       "context_budget_chars": 48000
     },
+    {
+      "id": "S00-018",
+      "stage": "S00",
+      "kind": "blocker",
+      "root_task": "S00-003",
+      "blocker_depth": 1,
+      "unblocks": [
+        "S00-003"
+      ],
+      "role": "protocol",
+      "reviewer_role": "security",
+      "title": "Validate bounded standalone XML ingress for the XMPP candidate",
+      "outcome": "One isolated runnable and independently reviewed ingress experiment enforces explicit finite XML resource limits and standalone text XML per WebSocket message before unsafe accumulation/import, through a supported library integration path.",
+      "depends_on": [
+        "S00-001",
+        "S00-002",
+        "S00-017"
+      ],
+      "requirements": [
+        "ACC-004",
+        "NET-003",
+        "NET-004"
+      ],
+      "scope": [
+        "experiments/0002-xmpp-library/parser-validation/**",
+        "docs/decisions/0002-xmpp-parser-validation.md"
+      ],
+      "inputs": [
+        "docs/WEB_PROFILE.md",
+        "docs/ARCHITECTURE.md",
+        "docs/CONTRACTS.md",
+        "docs/TESTING.md",
+        "roles/protocol.md",
+        "docs/decisions/README.md",
+        "state/blockers/S00-018.md"
+      ],
+      "spec_sections": [],
+      "ui_sections": [],
+      "steps": [
+        "Read original blocker evidence, bounded probe, shipped parser/transport APIs and RFC 7395 framing; reproduce the stock failure with finite synthetic input.",
+        "Choose and document a supported ingress integration using vetted existing XML parsing; keep limits experiment-local, do not implement a handwritten security XML parser or patch ignored vendor sources.",
+        "Enforce byte/depth/element/attribute budgets and complete single-document text-message framing before unbounded tree/import work; reject invalid input terminally and clear attempt state.",
+        "Add valid boundary and adversarial fixtures including incomplete messages, multiple roots, oversized tokens/attributes, deep XML, malformed XML and binary messages; verify rejection causes no stanza delivery or retained cross-message state.",
+        "Record exact dependencies/licenses/browser API constraints if adding packages, runnable commands/results and limitations, then submit for independent security review."
+      ],
+      "acceptance": [
+        "Explicit finite byte/depth/element/attribute budgets are enforced before uncontrolled accumulation/import; boundary-valid stanza still parses with actual library behavior.",
+        "Each WebSocket message is one complete standalone text XML document; incomplete/multiple-root/binary input is rejected and cannot be revived by a later message.",
+        "Original large/deep/cross-message failure categories are rejected under documented local limits without post-import-only checks, vendor patch or TLS/CORS bypass.",
+        "One supported integration path and cleanup/reset behavior are demonstrated by runnable actual ingress tests; no production shared contract, auth policy or product limit change."
+      ],
+      "checks": [
+        "Positive boundary-valid framed stanza using the actual candidate registry/parser and ingress integration.",
+        "Original bounded probe categories exceed local budgets or fail framing and produce terminal rejection without stanza emission.",
+        "Malformed/unfinished/multiple-root/binary/oversized-token/attribute/depth/element cases; no cross-message retained state or late revival.",
+        "Fresh attempt/reset accepts valid input; dependency pin/license/API and scope inspection."
+      ],
+      "context_budget_chars": 48000
+    },
     {
       "id": "S00-010",
       "stage": "S00",

planning/tasks/S00-003.md

@@ -5,7 +5,7 @@
 - Этап: S00
 - Оператор: protocol
 - Reviewer: qa
-- Зависимости: S00-001, S00-002, S00-017
+- Зависимости: S00-001, S00-002, S00-017, S00-018
 - Требования: ACC-004, NET-003, NET-004
 
 ## Один результат

planning/tasks/S00-018.md

@@ -0,0 +1,62 @@
+# S00-018: Validate bounded standalone XML ingress for the XMPP candidate
+
+- Remediation для: S00-003; root: S00-003; depth: 1
+
+> Generated from planning/tasks.json; status is in state/tasks.json.
+
+- Этап: S00
+- Оператор: protocol
+- Reviewer: security
+- Зависимости: S00-001, S00-002, S00-017
+- Требования: ACC-004, NET-003, NET-004
+
+## Один результат
+
+One isolated runnable and independently reviewed ingress experiment enforces explicit finite XML resource limits and standalone text XML per WebSocket message before unsafe accumulation/import, through a supported library integration path.
+
+## Разрешённые пути
+
+- `experiments/0002-xmpp-library/parser-validation/**`
+- `docs/decisions/0002-xmpp-parser-validation.md`
+
+Не изменять другие modules, shared contracts или spec snapshots без изменения плана. Stem без расширения разрешает принятые stack-specific extensions и focused test рядом.
+
+## Прочитать
+
+- docs/WEB_PROFILE.md
+- docs/ARCHITECTURE.md
+- docs/CONTRACTS.md
+- docs/TESTING.md
+- roles/protocol.md
+- docs/decisions/README.md
+- state/blockers/S00-018.md
+
+## Шаги
+
+1. Read original blocker evidence, bounded probe, shipped parser/transport APIs and RFC 7395 framing; reproduce the stock failure with finite synthetic input.
+2. Choose and document a supported ingress integration using vetted existing XML parsing; keep limits experiment-local, do not implement a handwritten security XML parser or patch ignored vendor sources.
+3. Enforce byte/depth/element/attribute budgets and complete single-document text-message framing before unbounded tree/import work; reject invalid input terminally and clear attempt state.
+4. Add valid boundary and adversarial fixtures including incomplete messages, multiple roots, oversized tokens/attributes, deep XML, malformed XML and binary messages; verify rejection causes no stanza delivery or retained cross-message state.
+5. Record exact dependencies/licenses/browser API constraints if adding packages, runnable commands/results and limitations, then submit for independent security review.
+
+## Приёмка
+
+1. Explicit finite byte/depth/element/attribute budgets are enforced before uncontrolled accumulation/import; boundary-valid stanza still parses with actual library behavior.
+2. Each WebSocket message is one complete standalone text XML document; incomplete/multiple-root/binary input is rejected and cannot be revived by a later message.
+3. Original large/deep/cross-message failure categories are rejected under documented local limits without post-import-only checks, vendor patch or TLS/CORS bypass.
+4. One supported integration path and cleanup/reset behavior are demonstrated by runnable actual ingress tests; no production shared contract, auth policy or product limit change.
+
+## Focused checks
+
+1. Positive boundary-valid framed stanza using the actual candidate registry/parser and ingress integration.
+2. Original bounded probe categories exceed local budgets or fail framing and produce terminal rejection without stanza emission.
+3. Malformed/unfinished/multiple-root/binary/oversized-token/attribute/depth/element cases; no cross-message retained state or late revival.
+4. Fresh attempt/reset accepts valid input; dependency pin/license/API and scope inspection.
+
+## Блокер и завершение запуска
+
+Для всех ролей scope — только эта задача. При блокере создать issue JSON по state/ISSUE_TEMPLATE.json, вызвать escalate с текущим ID/role/agent, проверить status=blocked и resolution_task, затем немедленно завершить запуск. Не решать blocker и не выбирать следующую задачу самому. Новый агент назначается runner. Правки metadata через CLI — единственное исключение scope.
+
+## Передача
+
+Сохранить evidence/handoff; submit → review и завершить запуск. Reviewer также выполняет только эту задачу, включая обязательное escalate при блокере.