{
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  "card": {
    "id": "mpabi-freertos-c-15-integration",
    "series": "freertos-c",
    "series_title": "FreeRTOS C",
    "number": "15",
    "count": "15",
    "slug": "integration",
    "title": "Integrated deterministic FreeRTOS C application",
    "topic": "real IRQ, typed pipeline, heartbeat rendezvous and bounded diagnostics",
    "project": "Freestanding C nad FreeRTOS",
    "subject": "Informatyka",
    "level": "Rok 2 · L15 · RV32I/Hazard3",
    "revision_date": "2026-07-19T00:00:00+02:00",
    "status": "Gotowa",
    "version": "v00.01",
    "uuid": "0092481f-af7c-517a-87f7-e0d7af7e5a0e",
    "author": "M. Pabiszczak",
    "year": "2026"
  },
  "generated": {
    "tex": "doc/generated/main.tex",
    "html": "web/index.html",
    "html_css": "web/style.css",
    "html_tree_inspector": false,
    "react_app": true
  },
  "render_dictionary": false,
  "viewpoints": [
    {
      "id": "A1",
      "label": "CONTEXT",
      "subtitle": "end-to-end boundaries",
      "status": "enabled",
      "target_label": "fig:a1-context"
    },
    {
      "id": "A2",
      "label": "STRUCTURE",
      "subtitle": "typed objects and static storage",
      "status": "enabled",
      "target_label": "fig:a2-structure"
    },
    {
      "id": "A3",
      "label": "DISPATCH",
      "subtitle": "IRQ and timer bindings",
      "status": "enabled",
      "target_label": "fig:a3-dispatch"
    },
    {
      "id": "A4",
      "label": "APPLICATION",
      "subtitle": "task and primitive topology",
      "status": "enabled",
      "target_label": "fig:a4-application"
    },
    {
      "id": "A5",
      "label": "FLOW",
      "subtitle": "E01-E14 replay",
      "status": "enabled",
      "target_label": "fig:a5-flow"
    },
    {
      "id": "A6",
      "label": "STATE",
      "subtitle": "payload and readiness lifetime",
      "status": "enabled",
      "target_label": "fig:a6-state"
    },
    {
      "id": "A7",
      "label": "RUNTIME",
      "subtitle": "deadline, heap, stacks and ELF",
      "status": "enabled",
      "target_label": "fig:a7-runtime"
    },
    {
      "id": "A8",
      "label": "PATTERNS",
      "subtitle": "smallest justified mechanism",
      "status": "enabled",
      "target_label": "fig:a8-patterns"
    }
  ],
  "debug_strategies": {
    "code.architecture": {
      "id": "code.architecture",
      "kind": "code",
      "action": "open",
      "expected_observations": [
        "each primitive has one role",
        "application objects are static"
      ],
      "assertions": [
        "notification carries no payload",
        "shared state is accessed under mutex"
      ],
      "evidence_fields": [
        "type",
        "owner",
        "priority",
        "storage",
        "code_ref"
      ],
      "prerequisites": [
        "FC01-FC14 complete"
      ],
      "layout": [
        "typed payloads",
        "object owners",
        "callbacks",
        "static storage"
      ],
      "commands": [
        "rg -n 'CreateStatic|FromISR|Queue|EventGroup|Semaphore|Timer' include src"
      ]
    },
    "run.startup": {
      "id": "run.startup",
      "kind": "run",
      "action": "replay",
      "expected_observations": [
        "E01-E05 block in strict priority order",
        "E06 publishes one input"
      ],
      "assertions": [
        "heap delta is zero",
        "every handle and stack pointer is nonzero"
      ],
      "evidence_fields": [
        "handle",
        "SP",
        "heap",
        "priority",
        "event"
      ],
      "prerequisites": [
        "clean Hazard3 RAM",
        "static object creation complete"
      ],
      "layout": [
        "five task stacks",
        "two queues",
        "event group",
        "mutex",
        "timer"
      ],
      "commands": [
        "break fc15_checkpoint_committed if $a0 <= 6",
        "print g_fc15"
      ]
    },
    "run.pipeline": {
      "id": "run.pipeline",
      "kind": "run",
      "action": "replay",
      "expected_observations": [
        "E07-E10 form one uninterrupted priority chain",
        "sum_squares=140"
      ],
      "assertions": [
        "source clears before notify",
        "E10 precedes stimulus E11"
      ],
      "evidence_fields": [
        "mcause",
        "wake",
        "payload",
        "checksum",
        "tick",
        "SP"
      ],
      "prerequisites": [
        "E02-E05 waiting",
        "input status ready"
      ],
      "layout": [
        "external IRQ",
        "notification",
        "Sample queue",
        "Result queue",
        "publication"
      ],
      "commands": [
        "make sim",
        "print g_fc15_events",
        "print g_fc15.result_seen"
      ]
    },
    "run.rendezvous": {
      "id": "run.rendezvous",
      "kind": "run",
      "action": "replay",
      "expected_observations": [
        "heartbeat at start+5",
        "supervisor receives mask 0x3"
      ],
      "assertions": [
        "mutex entered three times",
        "completion is within eight ticks"
      ],
      "evidence_fields": [
        "timer tick",
        "event mask",
        "revision",
        "heartbeat",
        "heap",
        "HWM"
      ],
      "prerequisites": [
        "result bit set",
        "one-shot timer active"
      ],
      "layout": [
        "timer daemon",
        "mutex snapshot",
        "event bits",
        "diagnostics"
      ],
      "commands": [
        "break fc15_checkpoint_committed if $a0 >= 12",
        "print g_fc15"
      ]
    },
    "code.identity": {
      "id": "code.identity",
      "kind": "code",
      "action": "open",
      "expected_observations": [
        "every selected primitive is linked",
        "no C++ or unwind metadata"
      ],
      "assertions": [
        "external trap and daemon task are present",
        "static memory hooks are present"
      ],
      "evidence_fields": [
        "symbol",
        "source blob",
        "ELF SHA256",
        "image SHA256"
      ],
      "prerequisites": [
        "built ELF"
      ],
      "layout": [
        "C callbacks",
        "kernel primitives",
        "static hooks",
        "artifact hashes"
      ],
      "commands": [
        "make check-abi",
        "riscv64-unknown-elf-nm build/task01_integration/prog.elf"
      ]
    },
    "run.identity": {
      "id": "run.identity",
      "kind": "run",
      "action": "replay",
      "expected_observations": [
        "one PASS per run",
        "digest 8f767299 three times"
      ],
      "assertions": [
        "event order is exact",
        "all terminal invariants are true"
      ],
      "evidence_fields": [
        "digest",
        "event count",
        "PASS",
        "artifact identity"
      ],
      "prerequisites": [
        "built image"
      ],
      "layout": [
        "fourteen events",
        "three clean processes",
        "terminal"
      ],
      "commands": [
        "make check-determinism"
      ]
    }
  },
  "template": "templates/karta-klasyczna.json",
  "title_block": {
    "category": "KARTA PRACY · INFORMATYKA",
    "prepared_by": "M. Pabiszczak",
    "prepared_on": "2026-07-19T00:00:00+02:00",
    "title": "Integrated deterministic FreeRTOS C application",
    "url": "https://dce7fb9d-7b2f-5d49-96a2-3a30d3070b84.mpabi.pl/fe92efeb-3c38-5975-86d8-ed630e1ad3bb",
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    "revision": "v00.01",
    "issued_on": "2026-07-19T00:00:00+02:00",
    "series": "FREERTOS-C-15",
    "document_type": "karta pracy",
    "tool": "card-layouts",
    "show_qr": true,
    "show_repository_qr": true,
    "height_cm": 2.6,
    "repeat_on_every_page": true,
    "replace_front_matter": true
  },
  "front_page_scope": {
    "title": "Cel karty",
    "content_tex": "Uczeń składa kompletną aplikację FreeRTOS C i uzasadnia każdy użyty mechanizm przez payload, własność, fan-in albo czas, a następnie dowodzi całego kontraktu jednym deterministycznym śladem.",
    "scope_title": "Zakres karty",
    "scope_content_tex": "Prawdziwy external IRQ budzi acquisition. Dwie kolejki prowadzą Sample przez obliczenie sumy kwadratów do publikacji. Timer daemon dodaje heartbeat; event group i mutex tworzą spójny snapshot. Wszystkie obiekty aplikacji mają pamięć statyczną.",
    "scope_table": {
      "headers": [
        "Lekcja",
        "Task",
        "Najważniejsza idea",
        "Priorytet",
        "Status",
        "Version"
      ],
      "rows": [
        {
          "chapter": "FC15",
          "task": "Task01",
          "idea_tex": "real IRQ, typed pipeline, heartbeat rendezvous and bounded diagnostics",
          "priority": "główny",
          "status": "ready",
          "version": "v00.01",
          "key": true
        }
      ]
    }
  },
  "side_margin_tree_layout": {
    "columns": [
      {
        "id": "zawodowe",
        "label": "TECH",
        "side": "left",
        "tree": "WE -> EK -> KW",
        "description": "Dowody runtime."
      },
      {
        "id": "ogolne",
        "label": "OG",
        "side": "right",
        "tree": "WE -> EN -> KW",
        "description": "Model FreeRTOS C."
      }
    ]
  },
  "learning_effects": {
    "FC15.EN01": {
      "bloom_level": "Analiza",
      "label": "Justified RTOS architecture",
      "text": "Uczeń dobiera notification, queue, mutex, event group and timer by ownership and synchronization need.",
      "assessment_criteria": [
        "FC15.KW01"
      ]
    },
    "FC15.EK01": {
      "bloom_level": "Zastosowanie",
      "label": "Deterministic end-to-end proof",
      "text": "Uczeń odtwarza E01–E14 from hardware input through result, heartbeat, diagnostics and PASS.",
      "assessment_criteria": [
        "FC15.KW01"
      ]
    }
  },
  "assessment_criteria": {
    "FC15.KW01": {
      "text": "PASS; real MEI; pipeline before stimulus resume; sum 140; result and heartbeat ALL-mask; completion by tick 8; zero application heap delta; positive stack HWM; deterministic digest.",
      "learning_effects": [
        "FC15.EN01",
        "FC15.EK01"
      ]
    }
  },
  "educational_requirements": {
    "FC15.WE01": {
      "text": "Samodzielne zaprojektowanie, implementacja i diagnostyka deterministycznej aplikacji FreeRTOS C.",
      "label": "real IRQ, typed pipeline, heartbeat rendezvous and bounded diagnostics",
      "learning_effects": [
        "FC15.EN01",
        "FC15.EK01"
      ],
      "learning_tree": {
        "schema": "we-learning-tree.v1",
        "policy": "Każda aktywna kotwica wskazuje kod lub checkpoint.",
        "ogolne": [
          {
            "effect_ref": "FC15.EN01",
            "display": "EN LOCAL RTOS.15",
            "source": "LOCAL",
            "official": "RTOS",
            "local": "15",
            "kind": "EN",
            "tree_id": "FC15.WE01.OG.LOCAL.RTOS.15",
            "text": "Uczeń dobiera notification, queue, mutex, event group and timer by ownership and synchronization need.",
            "kw": [
              {
                "criterion_ref": "FC15.KW01",
                "display": "KW LOCAL RTOS.15",
                "source": "LOCAL",
                "kind": "KW",
                "official": "RTOS",
                "local": "15",
                "text": "Łączy kod, diagram i zweryfikowany dowód."
              }
            ]
          }
        ],
        "zawodowe": [
          {
            "effect_ref": "FC15.EK01",
            "display": "EK LOCAL RTOS.15",
            "source": "LOCAL",
            "official": "RTOS",
            "local": "15",
            "kind": "EK",
            "tree_id": "FC15.WE01.TECH.LOCAL.RTOS.15",
            "text": "Uczeń odtwarza E01–E14 from hardware input through result, heartbeat, diagnostics and PASS.",
            "kw": [
              {
                "criterion_ref": "FC15.KW01",
                "display": "KW LOCAL RTOS.15",
                "source": "LOCAL",
                "kind": "KW",
                "official": "RTOS",
                "local": "15",
                "text": "Łączy kod, diagram i zweryfikowany dowód."
              }
            ]
          }
        ]
      }
    }
  },
  "debug_checkpoints": {
    "schema": "stem-debug-checkpoints.v1",
    "semantics": "deterministic-replay",
    "artifact": {
      "source": "src/tasks/task01_integration.c",
      "source_git_blob": "b53b089d45e31108123aff657619dfc1603fe0b3",
      "elf": "build/task01_integration/prog.elf",
      "hazard3_elf_sha256": "9ebc2e032d20cf55c43b862e60936b26df0de0899cab6fca65ba032b4de77695",
      "hazard3_image": "build/task01_integration/prog.bin",
      "hazard3_image_sha256": "fd46dd3a71a4c0b5d9c5fe9c1c62a5201eed4c229331d207d97fec658f6e7570"
    },
    "targets": {
      "hazard3-sim": {
        "adapter": "hazard3-reset-load-replay.v1",
        "baseline": "restart-backend",
        "clean_ram": true
      }
    },
    "items": {
      "task01.configured": {
        "event_id": "E01",
        "stop": {
          "symbol": "fc15_checkpoint_committed",
          "offset": 0,
          "condition": "$a0 == 1"
        },
        "verify": {
          "expressions": [
            {
              "expr": "g_fc15_event_count",
              "equals": 1
            },
            {
              "expr": "g_fc15.heap_before == g_fc15.heap_after",
              "equals": 1
            },
            {
              "expr": "g_fc15.sample_queue != 0 && g_fc15.result_queue != 0",
              "equals": 1
            }
          ]
        }
      },
      "task01.acquisition-ready": {
        "event_id": "E02",
        "stop": {
          "symbol": "fc15_checkpoint_committed",
          "offset": 0,
          "condition": "$a0 == 2"
        },
        "verify": {
          "expressions": [
            {
              "expr": "g_fc15.acquisition_sp != 0",
              "equals": 1
            },
            {
              "expr": "g_fc15.acquired",
              "equals": 0
            }
          ]
        }
      },
      "task01.processor-ready": {
        "event_id": "E03",
        "stop": {
          "symbol": "fc15_checkpoint_committed",
          "offset": 0,
          "condition": "$a0 == 3"
        },
        "verify": {
          "expressions": [
            {
              "expr": "g_fc15.processor_sp != 0",
              "equals": 1
            },
            {
              "expr": "g_fc15.processed",
              "equals": 0
            }
          ]
        }
      },
      "task01.publisher-ready": {
        "event_id": "E04",
        "stop": {
          "symbol": "fc15_checkpoint_committed",
          "offset": 0,
          "condition": "$a0 == 4"
        },
        "verify": {
          "expressions": [
            {
              "expr": "g_fc15.publisher_sp != 0",
              "equals": 1
            },
            {
              "expr": "g_fc15.published",
              "equals": 0
            }
          ]
        }
      },
      "task01.supervisor-ready": {
        "event_id": "E05",
        "stop": {
          "symbol": "fc15_checkpoint_committed",
          "offset": 0,
          "condition": "$a0 == 5"
        },
        "verify": {
          "expressions": [
            {
              "expr": "g_fc15.supervisor_sp != 0",
              "equals": 1
            },
            {
              "expr": "g_fc15.returned_bits",
              "equals": 0
            }
          ]
        }
      },
      "task01.input-ready": {
        "event_id": "E06",
        "stop": {
          "symbol": "fc15_checkpoint_committed",
          "offset": 0,
          "condition": "$a0 == 6"
        },
        "verify": {
          "expressions": [
            {
              "expr": "g_fc15.input.status",
              "equals": 1
            },
            {
              "expr": "g_fc15.input.sequence",
              "equals": 42
            },
            {
              "expr": "g_fc15.input.value",
              "equals": 7
            }
          ]
        }
      },
      "task01.irq": {
        "event_id": "E07",
        "stop": {
          "symbol": "fc15_checkpoint_committed",
          "offset": 0,
          "condition": "$a0 == 7"
        },
        "verify": {
          "expressions": [
            {
              "expr": "g_fc15.mcause",
              "equals": 2147483659
            },
            {
              "expr": "g_fc15.irq_after_clear",
              "equals": 0
            },
            {
              "expr": "g_fc15.higher_priority_task_woken",
              "equals": 1
            }
          ]
        }
      },
      "task01.acquired": {
        "event_id": "E08",
        "stop": {
          "symbol": "fc15_checkpoint_committed",
          "offset": 0,
          "condition": "$a0 == 8"
        },
        "verify": {
          "expressions": [
            {
              "expr": "g_fc15.acquired",
              "equals": 1
            },
            {
              "expr": "g_fc15.sample_seen.value",
              "equals": 7
            },
            {
              "expr": "g_fc15.acquisition_saw_stimulus_after",
              "equals": 0
            }
          ]
        }
      },
      "task01.processed": {
        "event_id": "E09",
        "stop": {
          "symbol": "fc15_checkpoint_committed",
          "offset": 0,
          "condition": "$a0 == 9"
        },
        "verify": {
          "expressions": [
            {
              "expr": "g_fc15.processed",
              "equals": 1
            },
            {
              "expr": "g_fc15.result_seen.sum_squares",
              "equals": 140
            }
          ]
        }
      },
      "task01.published": {
        "event_id": "E10",
        "stop": {
          "symbol": "fc15_checkpoint_committed",
          "offset": 0,
          "condition": "$a0 == 10"
        },
        "verify": {
          "expressions": [
            {
              "expr": "g_fc15.published",
              "equals": 1
            },
            {
              "expr": "g_fc15.shared.revision",
              "equals": 1
            },
            {
              "expr": "g_fc15.result_ready",
              "equals": 1
            }
          ]
        }
      },
      "task01.stimulus-resumed": {
        "event_id": "E11",
        "stop": {
          "symbol": "fc15_checkpoint_committed",
          "offset": 0,
          "condition": "$a0 == 11"
        },
        "verify": {
          "expressions": [
            {
              "expr": "g_fc15.pipeline_done_at_stimulus_resume",
              "equals": 1
            },
            {
              "expr": "g_fc15.stimulus_after_irq",
              "equals": 1
            }
          ]
        }
      },
      "task01.heartbeat": {
        "event_id": "E12",
        "stop": {
          "symbol": "fc15_checkpoint_committed",
          "offset": 0,
          "condition": "$a0 == 12"
        },
        "verify": {
          "expressions": [
            {
              "expr": "g_fc15.heartbeat_calls",
              "equals": 1
            },
            {
              "expr": "g_fc15.shared.heartbeat",
              "equals": 1
            },
            {
              "expr": "g_fc15.heartbeat_tick == g_fc15.start_tick + 5",
              "equals": 1
            }
          ]
        }
      },
      "task01.diagnostics": {
        "event_id": "E13",
        "stop": {
          "symbol": "fc15_checkpoint_committed",
          "offset": 0,
          "condition": "$a0 == 13"
        },
        "verify": {
          "expressions": [
            {
              "expr": "(g_fc15.returned_bits & 3) == 3",
              "equals": 1
            },
            {
              "expr": "g_fc15.mutex_entries",
              "equals": 3
            },
            {
              "expr": "g_fc15.heap_before == g_fc15.heap_terminal",
              "equals": 1
            }
          ]
        }
      },
      "task01.pass": {
        "event_id": "E14",
        "stop": {
          "symbol": "fc15_checkpoint_committed",
          "offset": 0,
          "condition": "$a0 == 14"
        },
        "verify": {
          "expressions": [
            {
              "expr": "g_fc15_pass",
              "equals": 1
            },
            {
              "expr": "g_fc15_event_count",
              "equals": 14
            },
            {
              "expr": "g_fc15.snapshot.result.sum_squares",
              "equals": 140
            }
          ]
        }
      }
    }
  },
  "sections": [
    {
      "title": "A1 — End-to-end responsibility boundary",
      "order": 10,
      "content_kind": "prose",
      "asset_page_mode": "one-per-page",
      "page_orientation": "portrait",
      "content_tex": "Each boundary has one transport and one owner. The ISR carries no payload; the queues carry values; the event group carries readiness; the mutex protects a consistent shared snapshot.",
      "assets": [
        {
          "path": "assets/a1-context.png",
          "html_path": "assets/a1-context.svg",
          "source_path": "assets/a1-context.puml",
          "caption": "A1 CONTEXT — device, ISR, pipeline, heartbeat and supervision.",
          "label": "fig:a1-context",
          "alt": "A1 · integrated responsibility boundary",
          "kind": "diagram",
          "width": 1.0,
          "page_grid": {
            "columns": 1,
            "rows": 1,
            "page_width": 660,
            "page_height": 760,
            "overview": true,
            "step_tiles": {
              "device": 1,
              "isr": 1,
              "pipeline": 1,
              "daemon": 1,
              "supervisor": 1,
              "terminal": 1
            }
          },
          "interactive": {
            "kind": "uml-class",
            "storage_key": "fc15-a1-context",
            "title": "A1 · integrated responsibility boundary",
            "task": {
              "id": "task01",
              "label": "Task01 · integrated deterministic application"
            },
            "block": {
              "id": "a1",
              "label": "A1 CONTEXT",
              "description": "The external device, ISR, data pipeline, timer daemon, shared publication and supervisor are independent responsibility zones."
            },
            "phases": [
              {
                "id": "boundary",
                "label": "END-TO-END BOUNDARIES",
                "steps": [
                  {
                    "id": "device",
                    "number": 1,
                    "label": "input register bank owns raw sample",
                    "mode": "CODE",
                    "strategy_ref": "code.architecture",
                    "svg_label": "01",
                    "code_ref": "include/task01_integration.h:28",
                    "description": "input register bank owns raw sample",
                    "evidence": "status, sequence, value"
                  },
                  {
                    "id": "isr",
                    "number": 2,
                    "label": "external ISR only clears and notifies",
                    "mode": "CODE",
                    "strategy_ref": "code.architecture",
                    "svg_label": "02",
                    "code_ref": "src/tasks/task01_integration.c:154",
                    "description": "external ISR only clears and notifies",
                    "evidence": "no payload copy"
                  },
                  {
                    "id": "pipeline",
                    "number": 3,
                    "label": "three tasks transform typed values",
                    "mode": "CODE",
                    "strategy_ref": "code.architecture",
                    "svg_label": "03",
                    "code_ref": "src/tasks/task01_integration.c:170",
                    "description": "three tasks transform typed values",
                    "evidence": "Sample to Result to publication"
                  },
                  {
                    "id": "daemon",
                    "number": 4,
                    "label": "software timer owns independent heartbeat",
                    "mode": "CODE",
                    "strategy_ref": "code.architecture",
                    "svg_label": "04",
                    "code_ref": "src/tasks/task01_integration.c:288",
                    "description": "software timer owns independent heartbeat",
                    "evidence": "timer daemon context"
                  },
                  {
                    "id": "supervisor",
                    "number": 5,
                    "label": "supervisor joins and diagnoses",
                    "mode": "CODE",
                    "strategy_ref": "code.architecture",
                    "svg_label": "05",
                    "code_ref": "src/tasks/task01_integration.c:319",
                    "description": "supervisor joins and diagnoses",
                    "evidence": "result plus heartbeat"
                  },
                  {
                    "id": "terminal",
                    "number": 6,
                    "label": "one trace proves the whole boundary",
                    "mode": "RUN",
                    "event_id": "E14",
                    "strategy_ref": "run.identity",
                    "svg_label": "06",
                    "code_ref": "src/tasks/task01_integration.c:404",
                    "snapshot_ref": "task01.pass",
                    "description": "one trace proves the whole boundary",
                    "evidence": "PASS and deterministic digest"
                  }
                ]
              }
            ]
          }
        }
      ]
    },
    {
      "title": "A2 — Typed objects and static ownership",
      "order": 20,
      "content_kind": "prose",
      "asset_page_mode": "one-per-page",
      "page_orientation": "portrait",
      "content_tex": "A Sample has two words, a Result has four, and PublishedState adds revision and heartbeat. Queue storage copies the typed payload; notification and event bits never impersonate it.",
      "assets": [
        {
          "path": "assets/a2-structure.png",
          "html_path": "assets/a2-structure.svg",
          "source_path": "assets/a2-structure.puml",
          "caption": "A2 STRUCTURE — typed messages, kernel objects and static storage.",
          "label": "fig:a2-structure",
          "alt": "A2 · static object graph",
          "kind": "diagram",
          "width": 1.0,
          "page_grid": {
            "columns": 1,
            "rows": 1,
            "page_width": 660,
            "page_height": 760,
            "overview": true,
            "step_tiles": {
              "types": 1,
              "state": 1,
              "handles": 1,
              "storage": 1,
              "heap": 1
            }
          },
          "interactive": {
            "kind": "uml-class",
            "storage_key": "fc15-a2-structure",
            "title": "A2 · static object graph",
            "task": {
              "id": "task01",
              "label": "Task01 · integrated deterministic application"
            },
            "block": {
              "id": "a2",
              "label": "A2 STRUCTURE",
              "description": "All application tasks and kernel objects use named static storage; payload and synchronization records remain distinct."
            },
            "phases": [
              {
                "id": "objects",
                "label": "TYPES / OBJECTS / STORAGE",
                "steps": [
                  {
                    "id": "types",
                    "number": 1,
                    "label": "Sample and Result have explicit value layouts",
                    "mode": "CODE",
                    "strategy_ref": "code.architecture",
                    "svg_label": "01",
                    "code_ref": "include/task01_integration_model.h:12",
                    "description": "Sample and Result have explicit value layouts",
                    "evidence": "2-word and 4-word payloads"
                  },
                  {
                    "id": "state",
                    "number": 2,
                    "label": "PublishedState is one mutex snapshot",
                    "mode": "CODE",
                    "strategy_ref": "code.architecture",
                    "svg_label": "02",
                    "code_ref": "include/task01_integration_model.h:26",
                    "description": "PublishedState is one mutex snapshot",
                    "evidence": "result, revision, heartbeat"
                  },
                  {
                    "id": "handles",
                    "number": 3,
                    "label": "experiment names every task and object handle",
                    "mode": "CODE",
                    "strategy_ref": "code.architecture",
                    "svg_label": "03",
                    "code_ref": "include/task01_integration.h:35",
                    "description": "experiment names every task and object handle",
                    "evidence": "five tasks, two queues, event, mutex, timer"
                  },
                  {
                    "id": "storage",
                    "number": 4,
                    "label": "TCBs, stacks and control blocks are static",
                    "mode": "CODE",
                    "strategy_ref": "code.architecture",
                    "svg_label": "04",
                    "code_ref": "src/tasks/task01_integration.c:36",
                    "description": "TCBs, stacks and control blocks are static",
                    "evidence": "bounded application storage"
                  },
                  {
                    "id": "heap",
                    "number": 5,
                    "label": "object creation leaves current heap unchanged",
                    "mode": "RUN",
                    "event_id": "E01",
                    "strategy_ref": "run.startup",
                    "svg_label": "05",
                    "code_ref": "src/tasks/task01_integration.c:477",
                    "snapshot_ref": "task01.configured",
                    "description": "object creation leaves current heap unchanged",
                    "evidence": "before equals after"
                  }
                ]
              }
            ]
          }
        }
      ]
    },
    {
      "title": "A3 — Two asynchronous bindings",
      "order": 30,
      "content_kind": "prose",
      "asset_page_mode": "one-per-page",
      "page_orientation": "portrait",
      "content_tex": "FromISR notification selects acquisition immediately. The timer service later calls the heartbeat callback in task context; neither path calls the other's API family.",
      "assets": [
        {
          "path": "assets/a3-dispatch.png",
          "html_path": "assets/a3-dispatch.svg",
          "source_path": "assets/a3-dispatch.puml",
          "caption": "A3 DISPATCH — external IRQ to acquisition and timer expiry to daemon.",
          "label": "fig:a3-dispatch",
          "alt": "A3 · IRQ and timer dispatch",
          "kind": "diagram",
          "width": 1.0,
          "page_grid": {
            "columns": 1,
            "rows": 1,
            "page_width": 660,
            "page_height": 760,
            "overview": true,
            "step_tiles": {
              "external-vector": 1,
              "notify": 1,
              "immediate": 1,
              "timer-binding": 1,
              "heartbeat": 1
            }
          },
          "interactive": {
            "kind": "uml-class",
            "storage_key": "fc15-a3-dispatch",
            "title": "A3 · IRQ and timer dispatch",
            "task": {
              "id": "task01",
              "label": "Task01 · integrated deterministic application"
            },
            "block": {
              "id": "a3",
              "label": "A3 DISPATCH",
              "description": "The application has two unrelated asynchronous entries: a real external ISR and a software timer callback on the daemon task."
            },
            "phases": [
              {
                "id": "dispatch",
                "label": "TWO ASYNCHRONOUS ENTRIES",
                "steps": [
                  {
                    "id": "external-vector",
                    "number": 1,
                    "label": "external trap enters application ISR",
                    "mode": "CODE",
                    "strategy_ref": "code.architecture",
                    "svg_label": "01",
                    "code_ref": "src/common/hazard3_freertos_traps.S:24",
                    "description": "external trap enters application ISR",
                    "evidence": "full context save"
                  },
                  {
                    "id": "notify",
                    "number": 2,
                    "label": "ISR clears and wakes acquisition",
                    "mode": "RUN",
                    "event_id": "E07",
                    "strategy_ref": "run.pipeline",
                    "svg_label": "02",
                    "code_ref": "src/tasks/task01_integration.c:158",
                    "snapshot_ref": "task01.irq",
                    "description": "ISR clears and wakes acquisition",
                    "evidence": "MEI, source zero, wake true"
                  },
                  {
                    "id": "immediate",
                    "number": 3,
                    "label": "acquisition runs before stimulus resumes",
                    "mode": "RUN",
                    "event_id": "E08",
                    "strategy_ref": "run.pipeline",
                    "svg_label": "03",
                    "code_ref": "src/tasks/task01_integration.c:186",
                    "snapshot_ref": "task01.acquired",
                    "description": "acquisition runs before stimulus resumes",
                    "evidence": "stimulus_after=0"
                  },
                  {
                    "id": "timer-binding",
                    "number": 4,
                    "label": "timer object binds one callback and context",
                    "mode": "CODE",
                    "strategy_ref": "code.architecture",
                    "svg_label": "04",
                    "code_ref": "src/tasks/task01_integration.c:491",
                    "description": "timer object binds one callback and context",
                    "evidence": "one-shot period five"
                  },
                  {
                    "id": "heartbeat",
                    "number": 5,
                    "label": "timer daemon publishes independent readiness",
                    "mode": "RUN",
                    "event_id": "E12",
                    "strategy_ref": "run.rendezvous",
                    "svg_label": "05",
                    "code_ref": "src/tasks/task01_integration.c:297",
                    "snapshot_ref": "task01.heartbeat",
                    "description": "timer daemon publishes independent readiness",
                    "evidence": "heartbeat=1 at tick+5"
                  }
                ]
              }
            ]
          }
        }
      ]
    },
    {
      "title": "A4 — Task and primitive topology",
      "order": 40,
      "content_kind": "prose",
      "asset_page_mode": "one-per-page",
      "page_orientation": "portrait",
      "content_tex": "Priorities 6, 5 and 4 let the data pipeline finish before returning to stimulus priority 1. Supervisor priority 2 remains blocked until both result and heartbeat exist.",
      "assets": [
        {
          "path": "assets/a4-application.png",
          "html_path": "assets/a4-application.svg",
          "source_path": "assets/a4-application.puml",
          "caption": "A4 APPLICATION — priorities, transports and one rendezvous.",
          "label": "fig:a4-application",
          "alt": "A4 · application topology",
          "kind": "diagram",
          "width": 1.0,
          "page_grid": {
            "columns": 1,
            "rows": 1,
            "page_width": 660,
            "page_height": 760,
            "overview": true,
            "step_tiles": {
              "acq-ready": 1,
              "proc-ready": 1,
              "pub-ready": 1,
              "supervisor-ready": 1,
              "heartbeat-role": 1,
              "stimulus-role": 1
            }
          },
          "interactive": {
            "kind": "uml-class",
            "storage_key": "fc15-a4-application",
            "title": "A4 · application topology",
            "task": {
              "id": "task01",
              "label": "Task01 · integrated deterministic application"
            },
            "block": {
              "id": "a4",
              "label": "A4 APPLICATION",
              "description": "Five application tasks and the timer daemon form one acyclic data path plus one independent control path."
            },
            "phases": [
              {
                "id": "topology",
                "label": "TASK / OBJECT TOPOLOGY",
                "steps": [
                  {
                    "id": "acq-ready",
                    "number": 1,
                    "label": "acquisition priority 6 waits on notification",
                    "mode": "RUN",
                    "event_id": "E02",
                    "strategy_ref": "run.startup",
                    "svg_label": "01",
                    "code_ref": "src/tasks/task01_integration.c:179",
                    "snapshot_ref": "task01.acquisition-ready",
                    "description": "acquisition priority 6 waits on notification",
                    "evidence": "one-to-one wake"
                  },
                  {
                    "id": "proc-ready",
                    "number": 2,
                    "label": "processor priority 5 waits on Sample queue",
                    "mode": "RUN",
                    "event_id": "E03",
                    "strategy_ref": "run.startup",
                    "svg_label": "02",
                    "code_ref": "src/tasks/task01_integration.c:217",
                    "snapshot_ref": "task01.processor-ready",
                    "description": "processor priority 5 waits on Sample queue",
                    "evidence": "typed copy"
                  },
                  {
                    "id": "pub-ready",
                    "number": 3,
                    "label": "publisher priority 4 waits on Result queue",
                    "mode": "RUN",
                    "event_id": "E04",
                    "strategy_ref": "run.startup",
                    "svg_label": "03",
                    "code_ref": "src/tasks/task01_integration.c:256",
                    "snapshot_ref": "task01.publisher-ready",
                    "description": "publisher priority 4 waits on Result queue",
                    "evidence": "typed copy"
                  },
                  {
                    "id": "supervisor-ready",
                    "number": 4,
                    "label": "supervisor waits for both event bits",
                    "mode": "RUN",
                    "event_id": "E05",
                    "strategy_ref": "run.startup",
                    "svg_label": "04",
                    "code_ref": "src/tasks/task01_integration.c:327",
                    "snapshot_ref": "task01.supervisor-ready",
                    "description": "supervisor waits for both event bits",
                    "evidence": "ALL mask"
                  },
                  {
                    "id": "heartbeat-role",
                    "number": 5,
                    "label": "daemon priority 3 provides heartbeat",
                    "mode": "CODE",
                    "strategy_ref": "code.architecture",
                    "svg_label": "05",
                    "code_ref": "include/FreeRTOSConfig.h:26",
                    "description": "daemon priority 3 provides heartbeat",
                    "evidence": "independent control path"
                  },
                  {
                    "id": "stimulus-role",
                    "number": 6,
                    "label": "stimulus priority 1 injects one input",
                    "mode": "RUN",
                    "event_id": "E06",
                    "strategy_ref": "run.pipeline",
                    "svg_label": "06",
                    "code_ref": "src/tasks/task01_integration.c:430",
                    "snapshot_ref": "task01.input-ready",
                    "description": "stimulus priority 1 injects one input",
                    "evidence": "sequence 42, value 7"
                  }
                ]
              }
            ]
          }
        }
      ]
    },
    {
      "title": "A5 — Fourteen-event replay",
      "order": 50,
      "content_kind": "prose",
      "asset_page_mode": "one-per-page",
      "page_orientation": "portrait",
      "content_tex": "E07–E11 prove that notification plus strict priorities complete acquisition, calculation and publication before the interrupted stimulus resumes. E12–E14 prove the independent rendezvous and deadline.",
      "assets": [
        {
          "path": "assets/a5-flow.png",
          "html_path": "assets/a5-flow.svg",
          "source_path": "assets/a5-flow.puml",
          "caption": "A5 FLOW — E01–E14 from static configuration to PASS.",
          "label": "fig:a5-flow",
          "alt": "A5 · integrated deterministic replay",
          "kind": "diagram",
          "width": 1.0,
          "page_grid": {
            "columns": 1,
            "rows": 1,
            "page_width": 660,
            "page_height": 760,
            "overview": true,
            "step_tiles": {
              "e01": 1,
              "e02": 1,
              "e03": 1,
              "e04": 1,
              "e05": 1,
              "e06": 1,
              "e07": 1,
              "e08": 1,
              "e09": 1,
              "e10": 1,
              "e11": 1,
              "e12": 1,
              "e13": 1,
              "e14": 1
            }
          },
          "interactive": {
            "kind": "uml-sequence",
            "storage_key": "fc15-a5-flow",
            "title": "A5 · integrated deterministic replay",
            "task": {
              "id": "task01",
              "label": "Task01 · integrated deterministic application"
            },
            "block": {
              "id": "a5",
              "label": "A5 FLOW",
              "description": "The trace separates startup, the immediate IRQ-driven data chain, delayed heartbeat and final diagnostic terminal."
            },
            "phases": [
              {
                "id": "startup",
                "label": "STARTUP E01–E06",
                "steps": [
                  {
                    "id": "e01",
                    "number": 1,
                    "label": "static objects and timer configured",
                    "mode": "RUN",
                    "event_id": "E01",
                    "strategy_ref": "run.startup",
                    "svg_label": "01",
                    "code_ref": "src/tasks/task01_integration.c:475",
                    "snapshot_ref": "task01.configured",
                    "description": "static objects and timer configured",
                    "evidence": "heap delta zero"
                  },
                  {
                    "id": "e02",
                    "number": 2,
                    "label": "acquisition blocks",
                    "mode": "RUN",
                    "event_id": "E02",
                    "strategy_ref": "run.startup",
                    "svg_label": "02",
                    "code_ref": "src/tasks/task01_integration.c:180",
                    "snapshot_ref": "task01.acquisition-ready",
                    "description": "acquisition blocks",
                    "evidence": "priority 6"
                  },
                  {
                    "id": "e03",
                    "number": 3,
                    "label": "processor blocks",
                    "mode": "RUN",
                    "event_id": "E03",
                    "strategy_ref": "run.startup",
                    "svg_label": "03",
                    "code_ref": "src/tasks/task01_integration.c:218",
                    "snapshot_ref": "task01.processor-ready",
                    "description": "processor blocks",
                    "evidence": "priority 5"
                  },
                  {
                    "id": "e04",
                    "number": 4,
                    "label": "publisher blocks",
                    "mode": "RUN",
                    "event_id": "E04",
                    "strategy_ref": "run.startup",
                    "svg_label": "04",
                    "code_ref": "src/tasks/task01_integration.c:257",
                    "snapshot_ref": "task01.publisher-ready",
                    "description": "publisher blocks",
                    "evidence": "priority 4"
                  },
                  {
                    "id": "e05",
                    "number": 5,
                    "label": "supervisor waits ALL",
                    "mode": "RUN",
                    "event_id": "E05",
                    "strategy_ref": "run.startup",
                    "svg_label": "05",
                    "code_ref": "src/tasks/task01_integration.c:328",
                    "snapshot_ref": "task01.supervisor-ready",
                    "description": "supervisor waits ALL",
                    "evidence": "mask 0x3"
                  },
                  {
                    "id": "e06",
                    "number": 6,
                    "label": "stimulus publishes input",
                    "mode": "RUN",
                    "event_id": "E06",
                    "strategy_ref": "run.pipeline",
                    "svg_label": "06",
                    "code_ref": "src/tasks/task01_integration.c:432",
                    "snapshot_ref": "task01.input-ready",
                    "description": "stimulus publishes input",
                    "evidence": "42 and 7"
                  }
                ]
              },
              {
                "id": "runtime",
                "label": "PIPELINE E07–E14",
                "steps": [
                  {
                    "id": "e07",
                    "number": 7,
                    "label": "ISR notifies acquisition",
                    "mode": "RUN",
                    "event_id": "E07",
                    "strategy_ref": "run.pipeline",
                    "svg_label": "07",
                    "code_ref": "src/tasks/task01_integration.c:162",
                    "snapshot_ref": "task01.irq",
                    "description": "ISR notifies acquisition",
                    "evidence": "wake true"
                  },
                  {
                    "id": "e08",
                    "number": 8,
                    "label": "acquisition queues Sample",
                    "mode": "RUN",
                    "event_id": "E08",
                    "strategy_ref": "run.pipeline",
                    "svg_label": "08",
                    "code_ref": "src/tasks/task01_integration.c:192",
                    "snapshot_ref": "task01.acquired",
                    "description": "acquisition queues Sample",
                    "evidence": "value 7"
                  },
                  {
                    "id": "e09",
                    "number": 9,
                    "label": "processor queues Result",
                    "mode": "RUN",
                    "event_id": "E09",
                    "strategy_ref": "run.pipeline",
                    "svg_label": "09",
                    "code_ref": "src/tasks/task01_integration.c:225",
                    "snapshot_ref": "task01.processed",
                    "description": "processor queues Result",
                    "evidence": "sum 140"
                  },
                  {
                    "id": "e10",
                    "number": 10,
                    "label": "publisher commits result bit",
                    "mode": "RUN",
                    "event_id": "E10",
                    "strategy_ref": "run.pipeline",
                    "svg_label": "10",
                    "code_ref": "src/tasks/task01_integration.c:266",
                    "snapshot_ref": "task01.published",
                    "description": "publisher commits result bit",
                    "evidence": "revision 1"
                  },
                  {
                    "id": "e11",
                    "number": 11,
                    "label": "stimulus resumes after pipeline",
                    "mode": "RUN",
                    "event_id": "E11",
                    "strategy_ref": "run.pipeline",
                    "svg_label": "11",
                    "code_ref": "src/tasks/task01_integration.c:442",
                    "snapshot_ref": "task01.stimulus-resumed",
                    "description": "stimulus resumes after pipeline",
                    "evidence": "result already ready"
                  },
                  {
                    "id": "e12",
                    "number": 12,
                    "label": "daemon commits heartbeat bit",
                    "mode": "RUN",
                    "event_id": "E12",
                    "strategy_ref": "run.rendezvous",
                    "svg_label": "12",
                    "code_ref": "src/tasks/task01_integration.c:299",
                    "snapshot_ref": "task01.heartbeat",
                    "description": "daemon commits heartbeat bit",
                    "evidence": "tick +5"
                  },
                  {
                    "id": "e13",
                    "number": 13,
                    "label": "supervisor joins and measures",
                    "mode": "RUN",
                    "event_id": "E13",
                    "strategy_ref": "run.rendezvous",
                    "svg_label": "13",
                    "code_ref": "src/tasks/task01_integration.c:332",
                    "snapshot_ref": "task01.diagnostics",
                    "description": "supervisor joins and measures",
                    "evidence": "bits, heap, HWM"
                  },
                  {
                    "id": "e14",
                    "number": 14,
                    "label": "all contracts reach PASS",
                    "mode": "RUN",
                    "event_id": "E14",
                    "strategy_ref": "run.identity",
                    "svg_label": "14",
                    "code_ref": "src/tasks/task01_integration.c:404",
                    "snapshot_ref": "task01.pass",
                    "description": "all contracts reach PASS",
                    "evidence": "digest 8f767299"
                  }
                ]
              }
            ]
          }
        }
      ]
    },
    {
      "title": "A6 — Data, readiness and lifetime states",
      "order": 60,
      "content_kind": "prose",
      "asset_page_mode": "one-per-page",
      "page_orientation": "portrait",
      "content_tex": "Queues become empty after each transfer; the shared state becomes valid at revision one; the event group releases only after both independent bits are present and then clears them on exit.",
      "assets": [
        {
          "path": "assets/a6-state.png",
          "html_path": "assets/a6-state.svg",
          "source_path": "assets/a6-state.puml",
          "caption": "A6 STATE — device, queues, shared state and ALL-bit rendezvous.",
          "label": "fig:a6-state",
          "alt": "A6 · integrated state machine",
          "kind": "diagram",
          "width": 1.0,
          "page_grid": {
            "columns": 1,
            "rows": 1,
            "page_width": 660,
            "page_height": 760,
            "overview": true,
            "step_tiles": {
              "device-ready": 1,
              "sample-copy": 1,
              "result-copy": 1,
              "result-bit": 1,
              "both-bits": 1,
              "snapshot": 1
            }
          },
          "interactive": {
            "kind": "uml-class",
            "storage_key": "fc15-a6-state",
            "title": "A6 · integrated state machine",
            "task": {
              "id": "task01",
              "label": "Task01 · integrated deterministic application"
            },
            "block": {
              "id": "a6",
              "label": "A6 STATE",
              "description": "Payload lifetime, task blocking and readiness bits evolve on separate state axes."
            },
            "phases": [
              {
                "id": "state",
                "label": "STATE AXES",
                "steps": [
                  {
                    "id": "device-ready",
                    "number": 1,
                    "label": "device changes empty to ready",
                    "mode": "RUN",
                    "event_id": "E06",
                    "strategy_ref": "run.pipeline",
                    "svg_label": "01",
                    "code_ref": "src/tasks/task01_integration.c:435",
                    "snapshot_ref": "task01.input-ready",
                    "description": "device changes empty to ready",
                    "evidence": "status=1"
                  },
                  {
                    "id": "sample-copy",
                    "number": 2,
                    "label": "Sample queue transfers and returns empty",
                    "mode": "RUN",
                    "event_id": "E08",
                    "strategy_ref": "run.pipeline",
                    "svg_label": "02",
                    "code_ref": "src/tasks/task01_integration.c:192",
                    "snapshot_ref": "task01.acquired",
                    "description": "Sample queue transfers and returns empty",
                    "evidence": "acquired=1"
                  },
                  {
                    "id": "result-copy",
                    "number": 3,
                    "label": "Result queue transfers and returns empty",
                    "mode": "RUN",
                    "event_id": "E10",
                    "strategy_ref": "run.pipeline",
                    "svg_label": "03",
                    "code_ref": "src/tasks/task01_integration.c:258",
                    "snapshot_ref": "task01.published",
                    "description": "Result queue transfers and returns empty",
                    "evidence": "published=1"
                  },
                  {
                    "id": "result-bit",
                    "number": 4,
                    "label": "result bit waits for heartbeat bit",
                    "mode": "RUN",
                    "event_id": "E10",
                    "strategy_ref": "run.pipeline",
                    "svg_label": "04",
                    "code_ref": "src/tasks/task01_integration.c:276",
                    "snapshot_ref": "task01.published",
                    "description": "result bit waits for heartbeat bit",
                    "evidence": "mask incomplete"
                  },
                  {
                    "id": "both-bits",
                    "number": 5,
                    "label": "heartbeat completes ALL mask",
                    "mode": "RUN",
                    "event_id": "E12",
                    "strategy_ref": "run.rendezvous",
                    "svg_label": "05",
                    "code_ref": "src/tasks/task01_integration.c:311",
                    "snapshot_ref": "task01.heartbeat",
                    "description": "heartbeat completes ALL mask",
                    "evidence": "mask 0x3"
                  },
                  {
                    "id": "snapshot",
                    "number": 6,
                    "label": "supervisor locks one complete snapshot",
                    "mode": "RUN",
                    "event_id": "E13",
                    "strategy_ref": "run.rendezvous",
                    "svg_label": "06",
                    "code_ref": "src/tasks/task01_integration.c:338",
                    "snapshot_ref": "task01.diagnostics",
                    "description": "supervisor locks one complete snapshot",
                    "evidence": "three mutex entries"
                  }
                ]
              }
            ]
          }
        }
      ]
    },
    {
      "title": "A7 — Deadline, memory and context proof",
      "order": 70,
      "content_kind": "prose",
      "asset_page_mode": "one-per-page",
      "page_orientation": "portrait",
      "content_tex": "All application objects are static, so current heap is equal before creation, after creation and at the terminal. Historical minimum remains a separate diagnostic value.",
      "assets": [
        {
          "path": "assets/a7-runtime.png",
          "html_path": "assets/a7-runtime.svg",
          "source_path": "assets/a7-runtime.puml",
          "caption": "A7 RUNTIME — cause, timing, heap, stacks and artifact identity.",
          "label": "fig:a7-runtime",
          "alt": "A7 · final runtime proof",
          "kind": "diagram",
          "width": 1.0,
          "page_grid": {
            "columns": 1,
            "rows": 1,
            "page_width": 660,
            "page_height": 760,
            "overview": true,
            "step_tiles": {
              "cause": 1,
              "ordering": 1,
              "deadline": 1,
              "heap": 1,
              "watermarks": 1,
              "abi": 1,
              "digest": 1
            }
          },
          "interactive": {
            "kind": "uml-class",
            "storage_key": "fc15-a7-runtime",
            "title": "A7 · final runtime proof",
            "task": {
              "id": "task01",
              "label": "Task01 · integrated deterministic application"
            },
            "block": {
              "id": "a7",
              "label": "A7 RUNTIME",
              "description": "The terminal connects hardware cause, scheduling order, queue state, stack watermarks, heap invariance and exact artifact identity."
            },
            "phases": [
              {
                "id": "runtime",
                "label": "RUNTIME ACCEPTANCE",
                "steps": [
                  {
                    "id": "cause",
                    "number": 1,
                    "label": "real MEI uses separate ISR stack",
                    "mode": "RUN",
                    "event_id": "E07",
                    "strategy_ref": "run.pipeline",
                    "svg_label": "01",
                    "code_ref": "src/tasks/task01_integration.c:158",
                    "snapshot_ref": "task01.irq",
                    "description": "real MEI uses separate ISR stack",
                    "evidence": "0x8000000b"
                  },
                  {
                    "id": "ordering",
                    "number": 2,
                    "label": "pipeline finishes before ISR return target resumes",
                    "mode": "RUN",
                    "event_id": "E11",
                    "strategy_ref": "run.pipeline",
                    "svg_label": "02",
                    "code_ref": "src/tasks/task01_integration.c:443",
                    "snapshot_ref": "task01.stimulus-resumed",
                    "description": "pipeline finishes before ISR return target resumes",
                    "evidence": "done=1"
                  },
                  {
                    "id": "deadline",
                    "number": 3,
                    "label": "heartbeat and completion stay within eight ticks",
                    "mode": "RUN",
                    "event_id": "E13",
                    "strategy_ref": "run.rendezvous",
                    "svg_label": "03",
                    "code_ref": "src/tasks/task01_integration.c:349",
                    "snapshot_ref": "task01.diagnostics",
                    "description": "heartbeat and completion stay within eight ticks",
                    "evidence": "completion tick <= start+8"
                  },
                  {
                    "id": "heap",
                    "number": 4,
                    "label": "static app objects preserve current heap",
                    "mode": "RUN",
                    "event_id": "E13",
                    "strategy_ref": "run.rendezvous",
                    "svg_label": "04",
                    "code_ref": "src/tasks/task01_integration.c:351",
                    "snapshot_ref": "task01.diagnostics",
                    "description": "static app objects preserve current heap",
                    "evidence": "three equal heap readings"
                  },
                  {
                    "id": "watermarks",
                    "number": 5,
                    "label": "six task contexts retain positive HWM",
                    "mode": "RUN",
                    "event_id": "E14",
                    "strategy_ref": "run.identity",
                    "svg_label": "05",
                    "code_ref": "src/tasks/task01_integration.c:392",
                    "snapshot_ref": "task01.pass",
                    "description": "six task contexts retain positive HWM",
                    "evidence": "acq/proc/pub/sup/stim/daemon"
                  },
                  {
                    "id": "abi",
                    "number": 6,
                    "label": "ELF requires every selected primitive",
                    "mode": "CODE",
                    "strategy_ref": "code.identity",
                    "svg_label": "06",
                    "code_ref": "scripts/check_abi.sh:18",
                    "description": "ELF requires every selected primitive",
                    "evidence": "C only; exact symbols"
                  },
                  {
                    "id": "digest",
                    "number": 7,
                    "label": "three clean images agree",
                    "mode": "RUN",
                    "event_id": "E14",
                    "strategy_ref": "run.identity",
                    "svg_label": "07",
                    "code_ref": "scripts/check_determinism.sh:14",
                    "snapshot_ref": "task01.pass",
                    "description": "three clean images agree",
                    "evidence": "8f767299"
                  }
                ]
              }
            ]
          }
        }
      ]
    },
    {
      "title": "A8 — Smallest justified mechanism",
      "order": 80,
      "content_kind": "prose",
      "asset_page_mode": "one-per-page",
      "page_orientation": "portrait",
      "content_tex": "Notification carries a one-to-one wake, queues carry typed values, mutex protects a multi-writer snapshot, event bits join independent conditions, and the software timer supplies time-based control work.",
      "assets": [
        {
          "path": "assets/a8-patterns.png",
          "html_path": "assets/a8-patterns.svg",
          "source_path": "assets/a8-patterns.puml",
          "caption": "A8 PATTERNS — choose by payload, fan-in, ownership and time.",
          "label": "fig:a8-patterns",
          "alt": "A8 · mechanism selection map",
          "kind": "diagram",
          "width": 1.0,
          "page_grid": {
            "columns": 1,
            "rows": 1,
            "page_width": 660,
            "page_height": 760,
            "overview": true,
            "step_tiles": {
              "notification": 1,
              "queue": 1,
              "mutex": 1,
              "event-group": 1,
              "timer": 1,
              "proof": 1
            }
          },
          "interactive": {
            "kind": "uml-class",
            "storage_key": "fc15-a8-patterns",
            "title": "A8 · mechanism selection map",
            "task": {
              "id": "task01",
              "label": "Task01 · integrated deterministic application"
            },
            "block": {
              "id": "a8",
              "label": "A8 PATTERNS",
              "description": "The architecture uses several primitives because each solves a different ownership problem, not because every learned API must appear."
            },
            "phases": [
              {
                "id": "choices",
                "label": "PROBLEM → SMALLEST MECHANISM",
                "steps": [
                  {
                    "id": "notification",
                    "number": 1,
                    "label": "one ISR wakes one acquisition task",
                    "mode": "CODE",
                    "strategy_ref": "code.architecture",
                    "svg_label": "01",
                    "code_ref": "src/tasks/task01_integration.c:162",
                    "description": "one ISR wakes one acquisition task",
                    "evidence": "notification; no payload"
                  },
                  {
                    "id": "queue",
                    "number": 2,
                    "label": "typed ownership crosses task boundaries",
                    "mode": "CODE",
                    "strategy_ref": "code.architecture",
                    "svg_label": "02",
                    "code_ref": "src/tasks/task01_integration.c:192",
                    "description": "typed ownership crosses task boundaries",
                    "evidence": "two value queues"
                  },
                  {
                    "id": "mutex",
                    "number": 3,
                    "label": "two writers build one consistent snapshot",
                    "mode": "CODE",
                    "strategy_ref": "code.architecture",
                    "svg_label": "03",
                    "code_ref": "src/tasks/task01_integration.c:261",
                    "description": "two writers build one consistent snapshot",
                    "evidence": "publisher and daemon"
                  },
                  {
                    "id": "event-group",
                    "number": 4,
                    "label": "supervisor joins independent conditions",
                    "mode": "CODE",
                    "strategy_ref": "code.architecture",
                    "svg_label": "04",
                    "code_ref": "src/tasks/task01_integration.c:332",
                    "description": "supervisor joins independent conditions",
                    "evidence": "wait ALL"
                  },
                  {
                    "id": "timer",
                    "number": 5,
                    "label": "control work is scheduled by time",
                    "mode": "CODE",
                    "strategy_ref": "code.architecture",
                    "svg_label": "05",
                    "code_ref": "src/tasks/task01_integration.c:491",
                    "description": "control work is scheduled by time",
                    "evidence": "one-shot heartbeat"
                  },
                  {
                    "id": "proof",
                    "number": 6,
                    "label": "one terminal validates all choices together",
                    "mode": "RUN",
                    "event_id": "E14",
                    "strategy_ref": "run.identity",
                    "svg_label": "06",
                    "code_ref": "src/tasks/task01_integration.c:358",
                    "snapshot_ref": "task01.pass",
                    "description": "one terminal validates all choices together",
                    "evidence": "no redundant transport"
                  }
                ]
              }
            ]
          }
        }
      ]
    },
    {
      "title": "Task01 — integrated deterministic application",
      "order": 90,
      "content_kind": "tasks",
      "task_refs": [
        "task01"
      ]
    }
  ],
  "tasks": {
    "task01": {
      "title": "Prove one complete FreeRTOS C architecture",
      "uuid": "fe92efeb-3c38-5975-86d8-ed630e1ad3bb",
      "prompt_tex": "Odtwórz E01--E14 i dla każdego mechanizmu zapisz jedną odpowiedzialność. Następnie udowodnij ciąg input 7, suma kwadratów 140, publikacja, heartbeat w ticku 5 i terminal przed tickiem 8.",
      "criterion": "PASS; real MEI; pipeline before stimulus resume; sum 140; result and heartbeat ALL-mask; completion by tick 8; zero application heap delta; positive stack HWM; deterministic digest.",
      "conclusion_tex": "Poprawna architektura RTOS nie maksymalizuje liczby prymitywów. Każdy obiekt ma rozwiązywać inną granicę własności lub synchronizacji, a cały wybór musi być widoczny w jednym mierzalnym śladzie.",
      "flow": [
        {
          "kind": "block",
          "id": "architecture",
          "title": "A — architektura",
          "content_tex": "Przypisz każdemu prymitywowi dokładnie jedną rolę.",
          "steps": [
            {
              "id": "owners",
              "title": "Zapisz tabelę własności.",
              "content_tex": "Payload, wake, shared snapshot, fan-in i time trigger nie są tym samym."
            },
            {
              "id": "predict",
              "title": "Przewidź E07--E12.",
              "content_tex": "Użyj priorytetów 6, 5, 4, 3, 2 i 1 do wyznaczenia kolejności."
            }
          ]
        },
        {
          "kind": "block",
          "id": "replay",
          "title": "B — replay",
          "content_tex": "Zbierz jeden spójny dowód od sprzętu do diagnostyki.",
          "steps": [
            {
              "id": "startup",
              "title": "Sprawdź E01--E06.",
              "content_tex": "Statyczna pamięć, taski zablokowane i input gotowy."
            },
            {
              "id": "pipeline",
              "title": "Sprawdź E07--E11.",
              "content_tex": "IRQ, notification, dwie kolejki, wynik i natychmiastowy chain."
            },
            {
              "id": "health",
              "title": "Sprawdź E12--E14.",
              "content_tex": "Timer daemon, mutex, ALL-mask, deadline, HWM, heap i digest."
            }
          ]
        },
        {
          "kind": "exercise",
          "id": "policy",
          "title": "Ćwiczenie — zmiana polityki",
          "prompt_tex": "Zmień wejście z 7 na 9 bez zmiany topologii. Wyznacz nową sumę kwadratów i checksum, zachowaj heartbeat oraz wszystkie kontrakty pamięci i kolejności.",
          "evidence_tex": "Nowy typed payload, przewidywany Result, E06/E09/E10/E14 oraz niezmienione heap, HWM i deadline gates.",
          "criterion": "Zmienia się wyłącznie polityka danych; architektura, własność, liczba zdarzeń i bramki bezpieczeństwa pozostają spójne.",
          "based_on": [
            "architecture",
            "replay"
          ]
        }
      ],
      "educational_requirement_refs": [
        "FC15.WE01"
      ],
      "learning_effect_refs": [
        "FC15.EN01",
        "FC15.EK01"
      ],
      "assessment_criterion_ref": "FC15.KW01"
    }
  },
  "tasks_order": [
    "task01"
  ]
}