docs(issues): add issue specs #1868 and #1869; archive closed specs #1841 and #1853

[josecelano]

Summary

Spec-only PR — no code changes. All changes are in docs/issues/.

New Issue Specs (opened and moved from drafts/ to open/)

• Exclude irrelevant workspace members from container build #1868 — Exclude irrelevant workspace members from container build
  (spec)
  — Post-merge CI analysis of PR feat(container): narrow build target scope to tracker image needs (closes #1853) #1867 showed workspace-coupling and
  torrust-tracker-torrent-repository-benchmarking are still compiled (~840s gap,
  19m03s total build step). Fix: add --exclude flags to all 6 cargo commands.

• Improve dependency-layer cache reuse within each workflow #1869 — Improve dependency-layer cache reuse within each workflow
  (spec)
  — Investigate whether dependency cook layers are reliably reused when only app code
  changes. T3 also evaluates whether the cargo-chef cook/build split delivers meaningful
  benefit given workspace-package churn.

Archived Closed Specs (open/ → closed/)

• Baseline workflow profiling and bottleneck analysis (EPIC #1840) #1841 — Baseline workflow profiling (merged PR feat(workflow-benchmarks): baseline workflow profiling and bottleneck analysis (#1841) #1848)
• Narrow Containerfile build targets to tracker image needs #1853 — Narrow Containerfile build targets (merged PR feat(container): narrow build target scope to tracker image needs (closes #1853) #1867)

All cross-spec path references updated accordingly.

EPIC Update

EPIC #1840 subissues table updated:

• Row 1: Baseline workflow profiling and bottleneck analysis (EPIC #1840) #1841 path → closed/
• Row 4: Narrow Containerfile build targets to tracker image needs #1853 marked DONE, path → closed/
• Row 4.1: new row for Exclude irrelevant workspace members from container build #1868
• Row 7: promoted from draft placeholder to Improve dependency-layer cache reuse within each workflow #1869 with open/ path

Related

Related to #1840, #1853, #1868, #1869

[Copilot]

Pull request overview

Spec-only PR updating the workflow-performance documentation backlog under docs/issues/ by promoting two draft specs into open/, archiving two completed specs into closed/, and updating all cross-references (especially EPIC #1840 and baseline links) to match the new locations.

Changes:

• Added new open issue specs for #1868 and #1869 (promoted from drafts).
• Archived closed specs for #1841 and #1853 (moved to docs/issues/closed/) and updated cross-links to point to closed/.
• Updated EPIC #1840 subissues table and several related draft specs to reference the archived baseline report location.

Reviewed changes

Copilot reviewed 14 out of 17 changed files in this pull request and generated 3 comments.

Show a summary per file

File	Description
docs/issues/open/1869-1840-workflow-performance-dependency-layer-cache-reuse/ISSUE.md	Promotes the dependency-layer cache reuse spec to an open issue (#1869) and updates scope/tasks.
docs/issues/open/1868-1840-workflow-performance-exclude-irrelevant-workspace-members/ISSUE.md	Adds new open issue spec for excluding irrelevant workspace members in container builds (#1868).
docs/issues/open/1854-1840-workflow-performance-container-test-gating/ISSUE.md	Updates baseline-report reference to the archived closed/ location.
docs/issues/open/1852-1840-workflow-performance-recipe-stage-manifest-only-copy/ISSUE.md	Updates baseline-report reference to the archived closed/ location.
docs/issues/open/1851-1840-workflow-performance-dockerignore-audit/ISSUE.md	Updates baseline-report reference to the archived closed/ location.
docs/issues/open/1840-improve-pr-workflow-performance-epic/EPIC.md	Updates subissues table to reflect archived specs and adds rows for #1868 and #1869.
docs/issues/drafts/1840-workflow-performance-split-external-dep-cache-layer/ISSUE.md	Updates baseline-report reference to the archived closed/ location.
docs/issues/drafts/1840-workflow-performance-prebuilt-base-images/ISSUE.md	Updates baseline-report reference to the archived closed/ location.
docs/issues/drafts/1840-workflow-performance-container-workflow-build-deduplication/ISSUE.md	Updates baseline-report reference to the archived closed/ location.
docs/issues/drafts/1840-workflow-performance-buildkit-cargo-cache-mounts/ISSUE.md	Updates baseline-report reference to the archived closed/ location.
docs/issues/drafts/1840-workflow-performance-alternative-linker/ISSUE.md	Updates baseline-report reference (and inline mention) to the archived closed/ location.
docs/issues/closed/1853-1840-workflow-performance-containerfile-target-scope/ISSUE.md	Archives #1853 spec to closed/ and updates internal baseline links/paths accordingly.
docs/issues/closed/1841-1840-workflow-performance-baseline-analysis/ISSUE.md	Archives #1841 spec to closed/ and updates references within metadata.
docs/issues/closed/1841-1840-workflow-performance-baseline-analysis/evidence/container-baseline-20260527T210123Z.log	Adds/moves baseline evidence log into the archived folder.
docs/issues/closed/1841-1840-workflow-performance-baseline-analysis/benchmark-results-baseline.md	Updates references to point to archived closed/ paths for baseline spec and evidence.

Comments suppressed due to low confidence (4)

docs/issues/open/1869-1840-workflow-performance-dependency-layer-cache-reuse/ISSUE.md:9

• branch still uses the {issue-number} placeholder even though github-issue: 1869 is set. Using the concrete branch name makes the spec immediately actionable.
  docs/issues/open/1869-1840-workflow-performance-dependency-layer-cache-reuse/ISSUE.md:77
• Since this spec has been promoted to docs/issues/open/ (and the progress log notes that promotion), the "Spec drafted in docs/issues/drafts/" checkpoint should be checked as completed.
  docs/issues/closed/1841-1840-workflow-performance-baseline-analysis/ISSUE.md:8
• This spec is being archived under docs/issues/closed/, but the frontmatter still says status: open. Many archived specs in docs/issues/closed/ use status: closed, which better reflects the issue's lifecycle and avoids confusion when scanning metadata.
  docs/issues/closed/1853-1840-workflow-performance-containerfile-target-scope/ISSUE.md:8
• This spec is being archived under docs/issues/closed/, but the frontmatter still says status: open. Setting status: closed keeps the metadata consistent with other archived specs and reduces confusion when filtering/searching by status.

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[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 77.76%. Comparing base (f9cd56c) to head (ea582a7).

Additional details and impacted files

@@             Coverage Diff             @@
##           develop    #1870      +/-   ##
===========================================
- Coverage    77.77%   77.76%   -0.02%     
===========================================
  Files          382      382              
  Lines        28637    28637              
  Branches     28637    28637              
===========================================
- Hits         22273    22270       -3     
- Misses        6054     6059       +5     
+ Partials       310      308       -2     

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[josecelano]

ACK ea582a7