Remove decorative image configuration

[efraespada]

Removes the deprecated decorative-image configuration surface and its runtime dependencies across the action, documentation, specifications, and generated bundles. It also makes project-board linking update the exact ProjectV2 item returned by GitHub, avoiding propagation-delay failures and duplicate links.

What changed

• Removed deprecated image inputs, configuration builders, runtime models, random-selection dependencies, and related tests.
• Updated action schemas, documentation, specifications, and generated bundles to enforce the absence of decorative-media configuration.
• Changed project linking to return and reuse the exact ProjectV2 item ID for direct status updates.
• Refined project-linking failure handling and pull request description guidance for clearer, more reliable UX.

[docs-page]

To preview the documentation for this pull request, visit the following URL:

docs.page/vypdev/copilot~393

Documentation is deployed and generated using docs.page

[codecov-commenter]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 92.99%. Comparing base (274db40) to head (3924f79).
⚠️ Report is 793 commits behind head on develop.

Additional details and impacted files

@@             Coverage Diff             @@
##           develop     #393      +/-   ##
===========================================
+ Coverage    90.94%   92.99%   +2.05%     
===========================================
  Files          135      652     +517     
  Lines         6251    17466   +11215     
  Branches      1338     4497    +3159     
===========================================
+ Hits          5685    16243   +10558     
- Misses         172      473     +301     
- Partials       394      750     +356     

Files with missing lines	Coverage Δ
src/actions/configuration_builders.ts	100.00% <ø> (ø)
src/actions/github_action_execution.ts	93.61% <100.00%> (ø)
src/actions/local_action_configuration_sections.ts	88.70% <ø> (ø)
src/actions/local_action_execution.ts	92.30% <100.00%> (ø)
src/application/contracts/input_keys.ts	100.00% <ø> (ø)
src/application/policies/bugbot_message_catalog.ts	100.00% <ø> (ø)
...pplication/usecases/push_single_action_contexts.ts	98.76% <ø> (ø)
...ases/steps/common/project_content_link_workflow.ts	100.00% <100.00%> (ø)
...n/usecases/steps/common/publish_resume_workflow.ts	95.94% <ø> (ø)
...secases/steps/issue/link_issue_project_use_case.ts	100.00% <100.00%> (ø)
... and 11 more

... and 697 files with indirect coverage changes

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[vypbot]

Bugbot: review incomplete

Current status: The review of 3924f79 has partial coverage and cannot declare the whole pull request clean.

Action: Do not treat this review as complete. Review the sources under Incomplete coverage and manually inspect omitted items; rerun only after reducing the relevant scope or restoring provider access.

Incomplete coverage

• selection: complete; retained=1
• pull-request-comments: complete; retained=0
• review-threads: complete; retained=0
• diff: partial; retained=39, omitted=51, truncated=2
• previous-findings: complete; retained=0
• human-conversation: complete; retained=0
• rules: complete; retained=0

Pull request · Verified commit · Workflow run