Make book target resilient to all component failures

[Copilot]

make book fails when any of its component targets (tests, docs, or marimushka) are unavailable or fail, blocking documentation generation. Reported in projects without test infrastructure or with failing test suites, docs generation issues, or missing notebooks.

Changes

• Remove hard dependencies: book target no longer depends on test, docs, or marimushka targets
• Add conditional execution: All three targets run opportunistically via $(MAKE) <target> || printf warning
• Preserve existing behavior: Component outputs (API docs, coverage, reports, notebooks) still included when available; missing sections already skip gracefully

-book:: test docs marimushka
+book:: install-uv
 	@printf "${BLUE}[INFO] Building combined documentation...${RESET}\n"
+	
+	# Run docs but don't fail book if docs fail or are unavailable
+	@$(MAKE) docs || printf "${YELLOW}[WARN] Docs failed or unavailable, continuing with book generation${RESET}\n"
+	
+	# Run marimushka but don't fail book if marimushka fails or is unavailable
+	@$(MAKE) marimushka || printf "${YELLOW}[WARN] Marimushka failed or unavailable, continuing with book generation${RESET}\n"
+	
+	# Run tests but don't fail book if tests fail or are unavailable
+	@$(MAKE) test || printf "${YELLOW}[WARN] Tests failed or unavailable, continuing with book generation${RESET}\n"
+	
 	@rm -rf _book && mkdir -p _book

Book generation now succeeds in all scenarios: all components passing, any combination failing, or any/all components absent.

Original prompt

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This section details on the original issue you should resolve

<issue_title>Book fails if test is not there</issue_title>
<issue_description>For an example see https://github.com/tschm/babynames/actions/runs/21408437517/job/61638668359
Make book shall survive the lack of 'make test'</issue_description>

Comments on the Issue (you are @copilot in this section)

• Fixes Book fails if test is not there #430

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[tschm]

@copilot Do the same trick for docs and marimushka

[Copilot]

@copilot Do the same trick for docs and marimushka

Applied the same resilience pattern to docs and marimushka targets. The book target now conditionally executes all three targets (docs, marimushka, test) and continues with book generation even if any of them fail. See commit 6a970dd.

[HarryCampion]

I worry about silent failures here like we saw in loman

[tschm]

I think for the book this makes sense. it creates all those content-cards only if the related job was successful. So, people may have no tests but the book is still working. If you then expect pages in the book that are missing you can see in the warnings for 'make book' that 'make test' did not work. The alternative is that we keep having an empty standard 'make test' somewhere not in the tests folder?