Docs/update adr docs

[halcwb]

Update ADR docs by removing documentation that describes resource specs. This now is just code, code comments and/or tests. Addressing issue #411

Also, add some documentation how to upgrade the URL params.

This is an ongoing effort to clean up the documentation for this repository as mentioned in #411

[greptile-apps]

Greptile Summary

This PR relocates spreadsheet resource specifications from ADR documents into source comments and executable column-contract tests, and adds roadmap documentation for URL-parameter and patient-persistence upgrades.

• Documents GenFORM sheet DTOs, parsers, and resource relationships alongside the implementation.
• Adds contract tests covering required and tolerated columns for ten resource sheets.
• Removes superseded resource-requirement and verification ADRs and updates repository guidance.
• Adds design proposals for expanded EHR URL parameters and patient persistence.

Confidence Score: 5/5

The PR appears safe to merge because its production-source changes are documentation or behavior-preserving mapper extractions, and the new tests match the current parser contracts.

No changed-code-triggered runtime, build, data-integrity, or security failure remains after checking the extracted mapper signatures, resource column declarations, fixture usage, and the explicitly prospective URL migration documentation.

Important Files Changed

Filename	Overview
src/Informedica.GenFORM.Lib/Types.fs	Adds extensive resource-schema and field-semantics documentation without changing runtime data shapes.
src/Informedica.GenFORM.Lib/Mapping.fs	Extracts existing row-mapping lambdas into testable named functions while preserving behavior and call signatures.
tests/Informedica.GenFORM.Tests/Tests.fs	Adds column-contract coverage whose declared required and tolerated columns align with current parser access patterns.
docs/roadmap/feature-ehr-url-parameters.md	Documents a proposed three-letter URL parameter migration and clearly identifies the parser and model changes still required.
docs/roadmap/feature-patient-persistence.md	Adds a design proposal for persisting patient context without altering current runtime behavior.
src/Informedica.GenFORM.Lib/DoseRuleData.fs	Documents parser optionality and the known pre-existing omission of Loc from CSV emission.

_{Reviews (1): Last reviewed commit: "chore: merge with docker build target" | Re-trigger Greptile}