chore: update recipes/docs for CNA-parity extension slugs

[ulises-jeremias]

Summary

• Update mock catalog, recipes, docs, and terminal demos to new extension slugs
• Use stack-correct Docker addons (fastapi-docker, django-docker, celery-docker) and postgres / development-container

Dependency

Aligns with cpa-templates#63. Merge after (or with) the templates rename.

Test plan

• Recipes section commands copy the new addon names
• /docs/extensions examples list stack Docker + postgres
• Unit tests for schemas/utils still pass

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Project	Deployment	Actions	Updated (UTC)
create-awesome-python-app-website	Ready	Preview, Comment	Jul 18, 2026 7:10am

[ulises-jeremias]

Depends on Create-Python-App/cpa-templates#63. @coderabbitai review

[github-actions]

🦙 MegaLinter status: ⚠️WARNING

Descriptor	Linter	Files	Fixed	Errors	Warnings	Elapsed time
✅ ACTION	actionlint	5		0	0	0.13s
✅ COPYPASTE	jscpd	yes		no	no	4.25s
✅ EDITORCONFIG	editorconfig-checker	166		0	0	1.23s
✅ JAVASCRIPT	standard	1		0	0	1.89s
✅ JSON	jsonlint	9		0	0	0.32s
✅ JSON	npm-package-json-lint	yes		no	no	0.6s
✅ JSON	prettier	9		0	0	0.7s
✅ JSON	v8r	9		0	0	16.8s
✅ MARKDOWN	markdownlint	9		0	0	0.79s
⚠️ MARKDOWN	markdown-table-formatter	9		1	0	0.33s
✅ REPOSITORY	checkov	yes		no	no	18.39s
✅ REPOSITORY	gitleaks	yes		no	no	0.63s
✅ REPOSITORY	git_diff	yes		no	no	0.01s
✅ REPOSITORY	secretlint	yes		no	no	1.73s
✅ REPOSITORY	trivy	yes		no	no	10.99s
✅ REPOSITORY	trufflehog	yes		no	no	4.72s
✅ SPELL	cspell	167		0	0	5.65s
✅ YAML	prettier	12		0	0	0.86s
✅ YAML	yamllint	12		0	0	0.68s

See detailed report in MegaLinter reports

[github-actions]

	Fails
🚫	📋 Missing Section - Please include the section: ## Description in your PR description.
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🚫	📋 Missing Section - Please include the section: ## How Has This Been Tested? in your PR description.
🚫	📋 Missing Section - Please include the section: ## Checklist in your PR description.

	Warnings
⚠️	📋 Unchecked Checklist Item - Please check the item: My code follows the style guidelines of this project in your PR description.
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⚠️	📋 Unchecked Checklist Item - Please check the item: I have made corresponding changes to the documentation in your PR description.
⚠️	📋 Unchecked Checklist Item - Please check the item: My changes generate no new warnings in your PR description.
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⚠️	This PR is changing more than 200 lines.
⚠️	This PR is changing more than 10 files.

	Messages
📖	Thanks for updating tests! Only YOU can prevent production fires. 🔥🌲🐻

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