UK A-Level Biology OS — Almost-Code (v1.1)

SYSTEM: Education OS
SUBJECT MODULE: UK A-Level Biology OS
PLUGS INTO:
  - UK Verification OS: A-Level OS (Module B)
  - UK Subject OS Plug-In Template
ZOOM LINK: Z6 (UK gate) ↔ Z5 (city execution) ↔ Z0 (student execution)
REFERENCE: CivOS (Phase P0–P3)
PRIMARY FUNCTION:
  Convert biological systems understanding + precise scientific language +
  data interpretation into stable, transferable exam performance under time,
  including unfamiliar contexts and structured long responses.

P3 (A-LEVEL BIOLOGY):
  The student can:
    - retrieve core structures/processes without cues (P-S1)
    - decode command words and prompts reliably (GF1 control)
    - explain mechanisms causally (not descriptive lists)
    - transfer to unfamiliar contexts (P-S4, AL-S2)
    - interpret data/graphs/statistical outputs consistently
    - write structured long answers with stable quality under time (P-S5)
    - recover after mistakes using a recovery protocol (GR4)

CORE SPINE (A-LEVEL BIOLOGY):
  BIO-SP1: Cell structure → function logic (structure-property thinking)
  BIO-SP2: Transport and exchange (diffusion, osmosis, circulation as mechanism)
  BIO-SP3: Enzymes + metabolism + energy transfer (cause-effect chains)
  BIO-SP4: Genetics + inheritance + gene expression (model reasoning)
  BIO-SP5: Homeostasis + control systems (feedback logic)
  BIO-SP6: Immunity + pathogens (mechanism + response)
  BIO-SP7: Ecology + populations (systems + tradeoffs)
  BIO-SP8: Practical skills + data + uncertainty (exam signature)
  BIO-SP9: Synoptic integration (multi-topic links under novelty)

FAILURE_MODES:
  AB-F01: Command-word decoding failure (GF1) ("describe/explain/evaluate")
  AB-F02: Descriptive answers вместо causal mechanism ("what" not "why/how")
  AB-F03: Memorisation without structure (facts not connected) (GF2→GF9)
  AB-F04: Transfer collapse on unfamiliar contexts/synoptic questions (GF9)
  AB-F05: Data interpretation instability (graphs/statistics/uncertainty)
  AB-F06: Practical/experimental reasoning gaps (controls/variables validity)
  AB-F07: Long-response structure collapse under time (GF6)
  AB-F08: Endurance collapse (late-paper quality drops) (AL-S3)
  AB-F09: Late repair trap (GF7)
  AB-F10: Autonomy scheduling collapse (missed weeks → ramp panic)
  AB-F11: Narrative substitution (GF10) (no sensors, no loops)

PHASE SENSORS:
  P-S1 retrieval reliability
  P-S2 error histogram (concept/execution/attention)
  P-S3 time-to-answer distribution (esp. long responses)
  P-S4 transfer check (unfamiliar contexts)
  P-S5 timed stability variance (volatility across papers)

A-LEVEL GATE SENSORS:
  AL-S1 chain-length stability (multi-step causal reasoning)
  AL-S2 synthesis transfer score (synoptic robustness)
  AL-S3 endurance stability (late-paper error/quality drop)
  AL-S5 repair latency vs exam horizon
  AL-S6 self-scheduling stability

BIO SUBJECT SENSORS:
  ABS-S1: command-word compliance rate (answers match task)
  ABS-S2: causal chain integrity score (mechanism completeness)
  ABS-S3: synoptic linkage score (connect topics correctly under novelty)
  ABS-S4: data interpretation stability (trend + inference accuracy)
  ABS-S5: experimental design quality (variables/controls validity)
  ABS-S6: long-answer structure stability (paragraph logic + marks coverage)

REPAIR LOOPS (A-LEVEL BIOLOGY):
GR5 Language-Base Loop (command words + scientific phrasing):
  - command-word drills
  - rewrite answers to match prompts
  - active retrieval of high-utility biological terms
GR1 Buffer Build Loop (systems spine):
  - build structure→function and cause→effect chains
  - spaced retrieval of linked concept maps (not isolated facts)
GR3 Transfer Loop (synoptic context variation):
  - unfamiliar contexts weekly
  - synoptic mixing sets (BIO-SP9 focus)
  - transfer audits (AL-S2)
GR2 Error-Log Loop (closure):
  - tag errors: command-word / causal gap / data / experimental / structure
  - micro-drill root cause
  - timed retest until repeats collapse
GR4 Time-Pressure Loop (writing stability):
  - timed paragraph micro-sets
  - recovery protocol: re-read command word → outline → write → check marks coverage
GR6 Continuity Loop (autonomy):
  - weekly minimums + consolidation windows
  - prevent missed-week drift
GR8 Early-Warning Thresholds:
  - trigger repair before exam season
GR11 Pressure-Safety Scheduling (optional):
  - protect recovery capacity to prevent burnout tail (GF12)

EARLY WARNING (A-LEVEL BIOLOGY):
  Trigger repair immediately if any are true:
    - ABS-S1 command-word compliance low
    - ABS-S2 causal chain integrity low (answers descriptive)
    - ABS-S4 data interpretation unstable across variants
    - ABS-S6 long-answer structure unstable under time
    - AL-S2 synoptic transfer below threshold
    - AL-S3 late-paper quality drops (endurance collapse)
    - P-S5 volatility high across timed papers
    - AL-S6 self-scheduling variance high (autonomy drift)

FAILURE TRACE:
  GF1 command-word decoding drift →
  descriptive answers (no mechanism) →
  GF9 synoptic novelty collapse →
  data/experimental reasoning errors →
  GF6 timed long-response collapse →
  GF7 late repair trap →
  A-Level gate failure
REPAIR TRACE:
  GR5 command words + language base →
  GR1 causal/system spine →
  GR3 synoptic transfer audits →
  GR2 closure of recurring errors (data/structure/command-word) →
  GR4 timed writing stability + recovery protocol →
  GR6 continuity + (GR11 pressure safety) →
  P3 reliability across full papers

PROOF OF STABILITY (P3):
  - ABS-S1 command-word compliance high across 3 papers
  - ABS-S2 causal chain integrity stable (mechanism answers, not lists)
  - ABS-S4 data interpretation stable across graph/stat variants
  - ABS-S5 experimental design answers meet validity criteria
  - ABS-S6 long-answer structure stable under time
  - AL-S3 late-paper quality does not drop
  - P-S5 volatility low across 3 full timed papers

PORTS:
  - UK Verification OS: A-Level OS (Module B)
  - UK GCSE OS (prerequisite mapping)
  - UK Subject OS Plug-in Template
  - London City Education OS (Z5)
  - W4 GF Library
  - W5 GR Library