Mirror WO PR #99's template-first approach for the Coupa PO processor. Two templates identified from a full 3,448-email triage:
- coupa_new_po (95.5%): scaffolded; fails closed to the LLM until extract_new_po lands.
- coupa_cancellation (2.9%): implemented.
Nested contract with recursive validation, Decimal money, and a fail-closed gate. Derived fields (site_code/trade/fiscal_year) are deferred to a shared post-stage. Comments, revisions, multi-line, and non-USD emails fall back to Bedrock. docs/po-template-parser.md records the investigation, decisions, and remaining work.
Signed-off-by: Adam Moussa <166072409+amoussa1229@users.noreply.github.com>
The parser test suite globbed for input .eml fixtures that the repo's
`*.eml` ignore rule kept uncommitted, so every parametrized golden and
fail-closed test collected zero cases and CI could not exercise the
deterministic parser that handles 100% of WO email volume.
Add a fixtures-only negation to .gitignore and commit the 55 scrubbed
positive samples (50 update-plaintext, 5 assign-html) plus 14
ai-fallback and 3 adversarial fixtures. The ai-fallback set covers each
fail-closed reason code (subject_no_match, single_space_work_order,
malformed_site_code, label_bleed, creation_time_unparseable,
wo_id_mismatch, missing_required_field) and the adversarial set proves
the parser is total and confines prompt-injection payloads to
comment_text without steering the structured fields.
* Merge workorder-ingest pipeline into unified repo
Move PO lambdas under lambdas/po/, add WO pipeline under lambdas/wo/.
Two independent CloudFormation stacks in one CDK app. Fix WO stack
compliance: ARM64 architecture, 60-day log retention, aarch64 bundling,
RETAIN on Anthropic secret. Remove stale CodePipeline buildspec.
* Fix test_local.py import path and remove dead shared/models.py
test_local.py referenced the old lambdas/email_processor path. Updated
to lambdas/wo/email_processor. Removed shared/ directory entirely as
nothing imports from it.
* Escape HTML in both web UI dashboards to prevent XSS
Both Function URLs are public (auth_type=NONE) and render
email-derived content via f-strings. Attacker-crafted emails
could inject scripts. Added html.escape() on all interpolated
values in both PO and WO dashboards.
* Add pagination to WO web UI scan
get_work_orders() only fetched the first 1MB page from DynamoDB.
Loop on LastEvaluatedKey to match the PO web UI pattern.
* Fix esc(None) TypeError and javascript: scheme in PO web UI
Coerce supplier name through `or ""` before escaping to handle
nested None from DynamoDB. Add scheme allowlist on view_order_url
to block javascript:/data: hrefs from LLM-extracted URLs.
* Fix WO render_badge None guard, updated_at slice, and backfill path
Add null guard to WO render_badge matching the PO version. Use
`or ""` before slicing updated_at to handle explicit None values.
Fix backfill_sites.py sys.path to use new lambdas/po/site_extractor.
* Harden WO web UI and fix JS-context XSS in both dashboards
- Use json.dumps for onclick URLs to prevent JS string breakout
- Add .lower() to WO render_badge color lookup matching PO pattern
- Add pagination to get_comments query
- Cap get_work_orders to 500 results matching PO pattern
* Apply ruff formatting to web UI handlers
CDK stack with SES receipt rule, S3 bucket, email processor Lambda
(Claude-powered extraction), web UI Lambda with Function URL, and
DynamoDB for storage. Includes reprocessing script for missed emails.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
