Review classification matrix

[denisecase]

The current classification matrix adopts a relevance-sensitive interpretation of exactly three classification values:

• IGN = identity-irrelevant or inapplicable (paper N/A cases)
• PRS = identity-relevant and preserving
• BRK = identity-relevant and breaking

Current matrix totals

This semantic clarification produces a different distribution from the earlier matrix.
The current matrix has 90 cells total:

Value	Count
PRS	22
BRK	20
IGN	48

Current row counts

Profile	PRS	BRK	IGN
OBL	2	1	7
OCC	2	2	6
REC	5	1	4
ENR_L	4	1	5
ENR_I	3	2	5
CTX_E	4	1	5
CTX_S	0	6	4
NOR_C	2	2	6
NOR_S	0	4	6
Total	22	20	48

Important semantic shift

The earlier resolved matrix had these totals:

Value	Count
PRS	42
BRK	38
IGN	10
Total	90

Prior REC x PV = PRS is Reflected

Rationale: provenance-tracking is the operative mechanism that bridges the identity break in the recovery regime. It is not passive metadata.

Review focus: CTX-S and NOR-S

The sharpest design choice is that two structure-sensitive profiles now have zero PRS (identity preserving) cells:

Profile	PRS	BRK	IGN
CTX_S	0	6	4
NOR_S	0	4	6

This is not automatically wrong.
It says that for structure-sensitive profiles,
the transformations that are identity-relevant alter the relevant structure and therefore break identity,
while remaining transformations are identity-irrelevant or inapplicable.

Question for review

Should CTX_S and NOR_S have zero preserving transformations under the fixed transformation basis?

More specifically:

1. For CTX_S, are all identity-relevant structural transformations correctly classified as BRK?
2. For NOR_S, are all identity-relevant structural transformations correctly classified as BRK?
3. Are there any transformations currently marked IGN that should instead be PRS because they preserve the relevant structure?
4. Are there any transformations currently marked BRK that should instead be PRS because they alter representation or detail without changing the identity-bearing structure?

Proposed acceptance criteria

• Confirm relevance-sensitive interpretation of IGN, PRS, and BRK.
• Confirm current totals: PRS=22, BRK=20, IGN=48, total=90.
• Confirm REC x PV = PRS resolution.
• Review CTX_S and NOR_S zero-PRS rows.
• If zero-PRS rows are accepted, add a note explaining why structure-sensitive profiles may have no preserving transformations in the fixed transformation basis.
• If not accepted, update affected cells and recompute totals.