Mandatory inline result display at end of dev loop (#190)

[MarkMichaelis]

Summary

Makes the end-of-cycle result display mandatory and self-enforcing so the
user can confirm a change worked without re-running the command.

Publish-Evidence.ps1 now echoes the artifact content inline for Inline
(.md / CLI / text) artifacts, with ANSI escape sequences stripped so the
fenced block is clean plain text. The echo runs in both -LocalOnly and normal
modes. ArtifactReference (UI HTML+video, binary) artifacts stay link-only.

A new -SkipDisplay switch (an explicit, user-approved opt-out) suppresses the
inline echo while still printing the Evidence (local): file:/// link line.

The instruction set is updated so the display is a required, gate-enforced field
of the Task Complete Summary and is never silently skipped by the agent.

Closes #190.

Changes

• helpers/Publish-Evidence.ps1: inline ANSI-stripped content echo for Inline
  artifacts (both modes); new -SkipDisplay switch; empty-file null guard.
• tests/Publish-Evidence.Tests.ps1: behavior-first tests (inline content
  echoed; ANSI stripped; ArtifactReference not echoed; -SkipDisplay link-only).
• evidence-capture/SKILL.md: "Result display contract" + compliance checklist
  item + documented opt-out.
• dev-loop.agent.md: Phase 5b mandatory "Display the result" step; hardened
  "hard gate, never skipped by the agent" wording; opt-out mapping; updated
  "When the Loop Is Complete".
• dev-loop-phase-gate/SKILL.md: after-Phase-5b gate item for the displayed
  result.
• copilot-instructions.md and CLAUDE.md: mandatory Result display field in
  the Task Complete Summary; removed the soft "omit" escape for it.

Behavior-first

The helper change shipped test-first: the four new tests were observed RED
before implementation, then GREEN.

Test

Invoke-Pester -Path .github/skills/evidence-capture/tests/

Full .github Pester suite: 371 passed, 0 failed, 4 skipped.

[MarkMichaelis]

Evidence: mandatory inline result display (#190)

Change type: CLI / PowerShell helper. Artifact: markdown (Inline).

Intent (issue #190)

End-of-cycle result display is mandatory. Inline (.md/CLI/text) artifacts render
their real result inline with ANSI stripped; -SkipDisplay suppresses the echo
but keeps the Evidence (local): link; ArtifactReference (UI/binary) stays
link-only.

A. Inline echo (default), ANSI stripped

Command:

Publish-Evidence.ps1 -ArtifactPath sample-artifact.md -PullRequest 1 -LocalOnly

Captured output (note the link line AND the echoed content; the source artifact
contained ESC[32m...ESC[0m color codes which are stripped):

Evidence (local): file:///.../sample-artifact.md
----- Evidence (inline result) -----
# Evidence: inline result display ...
PASS all 20 tests green
The widget now returns 42.
----- end evidence -----

B. -SkipDisplay: link only, no inline echo

Command:

Publish-Evidence.ps1 -ArtifactPath sample-artifact.md -PullRequest 1 -LocalOnly -SkipDisplay

Captured output (no content echo, link still printed):

Evidence (local): file:///.../sample-artifact.md

C. ArtifactReference (.html): link only

Command:

Publish-Evidence.ps1 -ArtifactPath ui.html -PullRequest 1 -LocalOnly

Captured output (no raw HTML echoed; link only):

Evidence (local): file:///.../ui.html

Test evidence

Invoke-Pester -Path .github/skills/evidence-capture/tests/
Tests Passed: 20, Failed: 0

AI review

• A. Artifact visibly confirms the intent given the diff: YES -- all three
  documented behaviors (inline ANSI-stripped echo, -SkipDisplay link-only,
  ArtifactReference link-only) are demonstrated by real runs.
• B. New problem introduced by the diff: NONE -- the link line still prints in
  every mode; full Pester suite green.

Result: PASSED.