Seal Phase 4AK frozen D18 independent validation

models/male-cns-lif/apl-timing-validation-v1/PROTOCOL.md

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+# Phase 4AK — frozen D18 validation, not learning
+
+Prerequisite: the entire Phase 4AJ fixed-CAL experiment was completed, sealed
+and published at cb6937666f96b00ae8d435a2cfb2f417ad25c040.
+Its PASS is not evidence of usable learning. This stage tests the next necessary
+representation-generalization gate without adjusting the successful branch.
+
+## No new brain dynamics
+
+Call the exact SHA-pinned AJ GPU, Brian oracle, comparison and timing code from
+their original absolute paths. Do not copy or patch their numerical functions,
+globals, signs, weights, thresholds, APL gain/tau, refractory or delay queue.
+Keep dt=0.1 ms, anatomical delay=18 steps, and whole generated graded-APL h
+applied 18 steps later. Preserve positive-zero initialization and pending tail;
+never advance brain time to drain the tail. Shared APL arithmetic limits the
+oracle independence claim. The 5845 fast-APL output mask, including 1212
+unreplaced non-KC edges, is unchanged. No biological measurement claim.
+
+## Input registration and data boundary
+
+Read only the four SHA-pinned original static 4L encoder files (panel, vectors,
+selection, mapping) and pinned encoder configuration/source. Extract only the
+unchanged pn_drive function AST; do not import or execute unrelated learning
+experiments. Validate the extraction and request generator against all 60 old
+AG CAL request/PN-drive arrays before generating any new brain trajectory.
+Keep the original 12-odor median 2.556107997894287 and original target/RNG column
+order. Matched energy is expected input, not exactly equal realized events.
+
+Predeclare both 6-odor x2-mode x5-seed blocks, every sparse request schedule,
+source hash, gate, and stop rule before any new brain trajectory. Seeds are the
+fixed first five integers above 2^30, subject to the enumerated static collision
+audit. They are not chosen using simulation outcomes. Do not claim exhaustive
+historical uniqueness, statistical independence of RNG streams, or biological
+replication. Same seed across odors preserves the existing paired comparisons.
+
+The second six odors are novel to AG/AJ calibration, not never simulated in
+project history: old 4L traversed the full panel. Never open old heldout dynamic
+results, mixed old result tables or conditioning/plasticity reports to choose
+inputs. Full frozen-integrity hashing may read opaque bytes for checksums; that
+is not permission to parse those outcomes. Static A/B identities are not used
+to select a favorable subset. No new resource download.
+
+## Ordered execution
+
+1. Freshly run the two original AJ D18 fullgraph probe inputs. Verify every
+   scientific output against sealed AJ, allowing only output budget/path
+   differences in spec. Do not fake D0 to use a D0-only helper. Old eight-fixture
+   proofs are source-pinned inherited evidence, not newly rerun fixture claims.
+2. For original CAL odors on new seeds, fixed first odor/first seed in each mode
+   is a Brian fullgraph probe, with independent LIF/own spikes/FIFO and the
+   existing shared-APL component audit. Any numerical failure stops.
+3. Complete the 60 seed-validation trajectories plus 12 exact repeats. Reuse
+   the two probe GPU runs rather than duplicate them as independent samples.
+4. Only if the entire seed block passes numerical, repeat and original
+   representation gates, unlock the second block. Run the first static novel
+   odor/first seed in each mode as two additional Brian probes, then complete
+   that block's 60 trajectories and 12 repeats. All planned conditions remain
+   visible; gated unexecuted cases are NOT PASS and are reported as such.
+5. Recompute raw evidence, rerun the five old frozen reference trials into new
+   output, verify every frozen artifact, and seal a truthful result.
+
+Each cohort/mode separately retains every original six-part 4L gate: mean KC
+fraction in [3%,9%], all runs >0 and <50%, same-odor Jaccard > different-odor,
+between-odor Euclidean > within-odor, and at least 3 of 15 odor pairs passing
+their own two-odor within baseline. Every mode has 60 within comparisons and
+75 between comparisons; each pair has 20 within and 5 between. No pooled
+12-odor rescue, seed replacement, post-hoc metric/window/gate changes or scans.
+
+## Outcome scope
+
+PASS-FROZEN-D18-INDEPENDENT-VALIDATION requires all four cohort/mode gates,
+complete data, fresh controls, oracle/component checks, exact repeats and old
+frozen integrity/reference PASS. Scientific failure remains FAIL; incomplete
+execution is not re-labelled scientific success. Passing does not generate a
+candidate, establish learning, prove delay biology or repair upstream AL loops.
+Next required gates remain credit specificity, real KC-to-MBON functional
+transfer, whole-brain stimulus-specific response, and controlled conditioning.
+
+All outputs are new under phase4ak-apl-timing-validation. Previous Phase 1–4AJ,
+base CSR/W_syn/signs, eligibility-v2 and the 14232-edge plastic mask remain
+read-only. No training, reward interface, game, vision, decoder, RL or Web.