afv-library/skills/explaining-batch-data-transform
Gaurav Bajpai 67d919947f
fix: address PRizm round-2 review findings from internal port @W-22196528@
Ports the 14 applicable round-2 fixes from the internal PRizm review to the
external afv-library source. (plugin.json finding #13 is internal-only and
does not apply here.)

Accepted fixes:
  1  bdt_analyze.py select_definition: isinstance(index, int) -> type(index) is int
     (reject bool subclass of int).
  2  bdt_analyze.py cmd_formula: precompute upstream fields_produced map to
     eliminate O(consumed x upstream) recomputation.
  3  bdt_analyze.py topo_order: replace sort-on-every-iteration with deque-based
     Kahn (preserves deterministic order).
  4  test_bdt_analyze.py test_all_subcommands_work_on_api_input: wrap loop in
     self.subTest for per-iteration failure reporting.
  5  test_bdt_analyze.py test_invalid_json_raises: register addCleanup BEFORE
     write_text so cleanup runs even if write fails.
  6  SKILL.md: remove misleading "strip __c suffix" field-trace troubleshooting
     advice; replace with source-DMO passthrough guidance.
  7  SKILL.md: rewrite cycle error message to direct user to Data Cloud viewer
     (re-export will not fix a cycle in the BDT definition).
  8  SKILL.md: add explicit --definition N flag documentation and list every
     subcommand that accepts it.
  9  SKILL.md: refine I2 routing guidance — pick the earliest formula/
     computeRelative node, not the output mapping.
  11 bdt-function-catalog.md: clean floor() wording ("always rounds down on the
     number line").
  12 bdt-node-catalog.md: businessType enum — assert list is canonical/complete;
     instruct skill to surface+flag any unknown value.
  14 append_and_split.json: change split subject from fragile
     CustomerFullName__c split-on-space to ChannelOrderKey__c split-on-hyphen;
     avoids name-parsing pitfall (middle names / multi-space).
  15 window_and_aggregate.json: use the computed OrderRank__c via a new
     FIRST_ORDER_AMOUNT formula node (case when rank=1 then amount else 0)
     feeding AGG_BY_ACCOUNT; illustrates the rank+formula+aggregate idiom.
  16 joins_and_filters.json: add explicit IS_NOT_NULL filter expression on
     GrandTotalAmount__c (defense-in-depth beyond GREATER_THAN 0).

Rejected finding (rationale posted as PR comment):
  10 bdt-node-catalog.md split section — reviewer claimed split is a
     pipeline-branching node. Canonical sources (core-262
     SplitParametersInputRepresentation.java + Salesforce help DITA
     c360_a_batch_transform_split.xml) both describe split as a
     string-splitting operation. Current docs are correct; not changing.

Tests: 92/92 passing.
2026-04-24 10:55:18 +05:30
..
assets/sample_bdts fix: address PRizm round-2 review findings from internal port @W-22196528@ 2026-04-24 10:55:18 +05:30
references fix: address PRizm round-2 review findings from internal port @W-22196528@ 2026-04-24 10:55:18 +05:30
scripts fix: address PRizm round-2 review findings from internal port @W-22196528@ 2026-04-24 10:55:18 +05:30
tests fix: address PRizm round-2 review findings from internal port @W-22196528@ 2026-04-24 10:55:18 +05:30
SKILL.md fix: address PRizm round-2 review findings from internal port @W-22196528@ 2026-04-24 10:55:18 +05:30