Add operational value and dashboarding for software development practices

[Copilot]

Adds measurable operational outcomes and dashboard visibility to the Software Development Practices Advisor’s GitHub Well-Architected and NIST SSDF workers.

• Operational value

  • Registers attainment-only evaluators for both workers.
  • Binds observations to framework, target repository, and assessed commit.
  • Scores explicit non-bot human acceptance within the 30-day evidence window.

• Evidence contract

  • Adds machine-readable markers to guidance issues:

    <!-- operational-value: framework=nist-ssdf target=OWNER/REPO target-sha=40_HEX_SHA -->

  • Preserves framework provenance, maturity, evidence cutoff, and missing-evidence diagnostics.

• Dashboard

  • Adds package-scoped views for workflow conclusions, guidance outcomes, accepted evidence, and framework-separated attainment trends.
  • Keeps operational value distinct from causation, certification, security, or conformance claims.

• Distribution

  • Packages the dashboard, evaluator runtime, and grader sources.
  • Updates clean-install contracts and package documentation.

[github-actions]

Validator Summary

Check	Status
test_unit	pass
test_integration	pass
test_load	pass
docs_build	pass
compile (agentic-workflows compile)	fail

Compile failures affecting this PR's workflows

Both software-development-practices-github-well-architected.md and software-development-practices-nist-ssdf.md (added/modified in this PR) fail agentic-workflows compile:

.github/workflows/software-development-practices-github-well-architected.md:1:1: error: graders.operational-value.run ".github/graders/software-development-practices-github-well-architected-operational-value.sh" has invalid Bash syntax: exec: "bash" executable file not found in $PATH

.github/workflows/software-development-practices-nist-ssdf.md:1:1: error: graders.operational-value.run ".github/graders/software-development-practices-nist-ssdf-operational-value.sh" has invalid Bash syntax: exec: "bash" executable file not found in $PATH

Note: several other pre-existing workflows in the repo (not modified by this PR) show the same "bash not found in $PATH" compilation error, suggesting the compiler's grader Bash-syntax check may run in an environment where bash is not resolvable via PATH (even though /usr/bin/bash exists on this runner and the grader scripts execute correctly when invoked directly). This may be an environment/tooling issue rather than a defect in the grader script content itself, but it currently blocks agentic-workflows compile from validating these two new workflows, so I am flagging it as a compile failure per the validation contract.

All other compiled workflows (37 of 39) passed without errors; only manifest warning noted was "Using experimental feature: config" for aw.yml (pre-existing, unrelated to this PR).

Result: REQUEST_CHANGES — compile validation failed for workflows added by this PR.

Generated by PR Reviewer / Agentic Workflow Validation for #516 · copilot · auto · 30.4 AIC · ⌖ 4.53 AIC · ⊞ 6.7K

Done