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{"type":"item.completed","item":{"id":"item_0","type":"agent_message","text":"=== BEGIN ARTIFACT FEATURE-Book-Removal.md ===\n# FEATURE: Book Removal\n\n| Field | Value |\n|-------------|-------|\n| Version | 20260815 V1 |\n| Description | Removes a selected book and preserves the relative order of remaining books. |\n| Depends On | DATABASE.md, FEATURE-Ordered-List.md |\n| Provides | POST /books/{id}/remove, book_removal |\n| Consumes | book_store.remove, ordered_book_listing |\n\n## Questions\n\n- None.\n\n## Purpose\n\nAllow a reader to remove a selected book from the reading list.\n\n## Trigger and Sequence\n\n1. The reader submits the removal control for a listed book.\n2. The application removes that book through the persistence boundary.\n3. The application redirects or returns the reader to the ordered list.\n4. The removed book is absent and remaining books retain their relative order.\n\n## Reads and Writes\n\n- Reads the selected book identifier from the removal request.\n- Writes deletion through `book_store.remove`.\n- Reads the resulting list through `ordered_book_listing`.\n\n## Operational Behavior\n\nThe removal route is `POST /books/<int:book_id>/remove`. Unknown identifiers do not remove any other book.\n\n## Programmatic Acceptance\n\n=== AC removal-route-reachable ===\nIntent: The removal route accepts a valid removal request.\nfrom app import create_app\n\napp = create_app({\"TESTING\": True})\nclient = app.test_client()\ntitle = \"Book to Remove\"\nauthor = \"Removal Author\"\ncreated = client.post(\"/books\", data={\"title\": title, \"author\": author})\nassert created.status_code in (200, 302, 303)\nlisted = client.get(\"/\")\nassert listed.status_code == 200\nremoved = client.post(\"/books/1/remove\")\nassert removed.status_code in (200, 302, 303)\n=== END AC removal-route-reachable ===\n\n=== AC removal-persists ===\nIntent: Removing a book makes it absent on the next public list read.\nfrom app import create_app\n\napp = create_app({\"TESTING\": True})\nclient = app.test_client()\ntitle = \"Temporary Book\"\nauthor = \"Temporary Author\"\nclient.post(\"/books\", data={\"title\": title, \"author\": author})\nbefore = client.get(\"/\")\nassert before.status_code == 200\nremoved = client.post(\"/books/1/remove\")\nassert removed.status_code in (200, 302, 303)\nafter = client.get(\"/\")\nassert after.status_code == 200\nassert title.encode() not in after.data\nassert author.encode() not in after.data\n=== END AC removal-persists ===\n\n=== AC removal-preserves-remaining-order ===\nIntent: Removing one book leaves the other books in their original relative order.\nfrom app import create_app\n\napp = create_app({\"TESTING\": True})\nclient = app.test_client()\nfirst_title = \"First Remaining\"\nfirst_author = \"First Author\"\nremoved_title = \"Middle Removed\"\nremoved_author = \"Middle Author\"\nlast_title = \"Last Remaining\"\nlast_author = \"Last Author\"\nclient.post(\"/books\", data={\"title\": first_title, \"author\": first_author})\nclient.post(\"/books\", data={\"title\": removed_title, \"author\": removed_author})\nclient.post(\"/books\", data={\"title\": last_title, \"author\": last_author})\nclient.post(\"/books/2/remove\")\nresponse = client.get(\"/\")\nassert response.status_code == 200\nfirst_position = response.data.index(first_title.encode())\nlast_position = response.data.index(last_title.encode())\nassert first_position < last_position\nassert removed_title.encode() not in response.data\n=== END AC removal-preserves-remaining-order ===\n\n## User Acceptance\n\n- A reader can remove a listed book and see the updated list.\n\n## Guardrails\n\n- Removal must go through the persistence boundary.\n- Removing one book must never reorder the remaining books.\n=== END ARTIFACT ===\n=== BEGIN ARTIFACT FEATURE-Incomplete-Submission.md ===\n# FEATURE: Incomplete Submission\n\n| Field | Value |\n|-------------|-------|\n| Version | 20260815 V1 |\n| Description | Rejects book submissions that omit a title or author and reports the missing requirement. |\n| Depends On | FEATURE-Book-Creation.md |\n| Provides | validate_book_submission |\n| Consumes | POST /books, book_creation |\n\n## Questions\n\n- None.\n\n## Purpose\n\nValidate book submissions at the submission boundary before persistence.\n\n## Workflow\n\nA submission is invalid when its title is empty, its author is empty, or both are empty. Invalid submissions are rejected, are not persisted, and return a clear user-facing indication that the required field is missing. Valid submissions continue through the existing creation workflow.\n\n## Programmatic Acceptance\n\n=== AC validation-rejects-empty-title ===\nIntent: A submission with an empty title is rejected with a client validation response.\nfrom app import create_app\n\napp = create_app({\"TESTING\": True})\nclient = app.test_client()\nauthor = \"Known Author\"\nresponse = client.post(\"/books\", data={\"title\": \"\", \"author\": author})\nassert response.status_code == 400\n=== END AC validation-rejects-empty-title ===\n\n=== AC validation-rejects-empty-author ===\nIntent: A submission with an empty author is rejected with a client validation response.\nfrom app import create_app\n\napp = create_app({\"TESTING\": True})\nclient = app.test_client()\ntitle = \"Known Title\"\nresponse = client.post(\"/books\", data={\"title\": title, \"author\": \"\"})\nassert response.status_code == 400\n=== END AC validation-rejects-empty-author ===\n\n=== AC validation-does-not-persist-invalid-submission ===\nIntent: Invalid submissions do not appear in the public list.\nfrom app import create_app\n\napp = create_app({\"TESTING\": True})\nclient = app.test_client()\ntitle = \"Rejected Title\"\nauthor = \"Rejected Author\"\nresponse = client.post(\"/books\", data={\"title\": title, \"author\": \"\"})\nassert response.status_code == 400\nlisted = client.get(\"/\")\nassert listed.status_code == 200\nassert title.encode() not in listed.data\nassert author.encode() not in listed.data\n=== END AC validation-does-not-persist-invalid-submission ===\n\n=== AC validation-preserves-valid-submission ===\nIntent: A valid submission remains supported by the creation workflow.\nfrom app import create_app\n\napp = create_app({\"TESTING\": True})\nclient = app.test_client()\ntitle = \"Valid Title\"\nauthor = \"Valid Author\"\nresponse = client.post(\"/books\", data={\"title\": title, \"author\": author})\nassert response.status_code in (200, 302, 303)\nlisted = client.get(\"/\")\nassert listed.status_code == 200\nassert title.encode() in listed.data\nassert author.encode() in listed.data\n=== END AC validation-preserves-valid-submission ===\n\n## User Acceptance\n\n- A reader receives a clear indication when title or author is required.\n\n## Guardrails\n\n- Never accept or store a submission with an empty title or author.\n- Validation must occur before persistence.\n=== END ARTIFACT ===\n=== BEGIN ARTIFACT SCREEN-Reading-List.md ===\n# SCREEN: Reading List\n\n| Field | Value |\n|-------------|-------|\n| Version | 20260815 V1 |\n| Description | Presents the reader-facing form, ordered book list, empty state, validation feedback, and removal controls. |\n| Depends On | UI-GENERAL.md, FEATURE-Book-Creation.md, FEATURE-Ordered-List.md, FEATURE-Book-Removal.md, FEATURE-Incomplete-Submission.md |\n| Provides | reading_list_screen |\n| Consumes | GET /, POST /books, POST /books/{id}/remove, reading_list_ui_patterns |\n| Route | / |\n| Parent | — |\n| Main Menu | Reading List (1) |\n| Sub Menu | — |\n| Tab Order | 1 |\n\n## Questions\n\n- None.\n\n## Layout and Interactions\n\nThe single screen contains:\n\n- A title and author form with a direct submission action.\n- The current books rendered in insertion order.\n- A clear empty-list state when no books exist.\n- A removal control for each listed book.\n- Clear validation feedback when title or author is missing.\n\nThe screen uses `GET /` for the initial and subsequent list reads, `POST /books` for creation, and `POST /books/<int:book_id>/remove` for removal.\n\n## Programmatic Acceptance\n\n=== AC screen-loads ===\nIntent: The reading-list screen is reachable at its declared route.\nfrom app import create_app\n\napp = create_app({\"TESTING\": True})\nclient = app.test_client()\nresponse = client.get(\"/\")\nassert response.status_code == 200\n=== END AC screen-loads ===\n\n=== AC screen-accepts-book-submission ===\nIntent: The screen supports submitting a title and author through the declared creation route.\nfrom app import create_app\n\napp = create_app({\"TESTING\": True})\nclient = app.test_client()\ntitle = \"Screen Book\"\nauthor = \"Screen Author\"\nresponse = client.post(\"/books\", data={\"title\": title, \"author\": author})\nassert response.status_code in (200, 302, 303)\nlisted = client.get(\"/\")\nassert listed.status_code == 200\nassert title.encode() in listed.data\nassert author.encode() in listed.data\n=== END AC screen-accepts-book-submission ===\n\n=== AC screen-supports-removal ===\nIntent: The screen supports removing a listed book through the declared removal route.\nfrom app import create_app\n\napp = create_app({\"TESTING\": True})\nclient = app.test_client()\ntitle = \"Screen Removal\"\nauthor = \"Screen Removal Author\"\nclient.post(\"/books\", data={\"title\": title, \"author\": author})\nresponse = client.post(\"/books/1/remove\")\nassert response.status_code in (200, 302, 303)\nlisted = client.get(\"/\")\nassert listed.status_code == 200\nassert title.encode() not in listed.data\n=== END AC screen-supports-removal ===\n\n=== AC screen-supports-empty-state ===\nIntent: The screen responds successfully when the reading list is empty.\nfrom app import create_app\n\napp = create_app({\"TESTING\": True})\nclient = app.test_client()\nresponse = client.get(\"/\")\nassert response.status_code == 200\n=== END AC screen-supports-empty-state ===\n\n## User Acceptance\n\n- A first-time reader can immediately find the title-and-author submission form.\n- The screen presents books in insertion order and exposes removal controls.\n- The empty-list and validation states are understandable.\n\n## Guardrails\n\n- The screen must not reorder books.\n- The screen must not offer submission without both title and author fields.\n=== END ARTIFACT ===\n=== BEGIN ARTIFACT FEATURE-Test-Suite.md ===\n# FEATURE: Test Suite\n\n| Field | Value |\n|-------------|-------|\n| Version | 20260815 V1 |\n| Description | Provides automated coverage and a complete POSIX test launcher for the reading-list application. |\n| Depends On | SCREEN-Reading-List.md |\n| Provides | sh bin/test.sh |\n| Consumes | reading_list_screen, book_creation, ordered_book_listing, book_removal, validate_book_submission |\n\n## Questions\n\n- None.\n\n## Purpose\n\nProvide automated tests for adding books, preserving insertion order, removing books, and rejecting empty titles or authors. The root-level `bin/test.sh` launcher is POSIX-compatible and runs the complete suite from the application root.\n\n## Test Coverage\n\nThe project test suite covers:\n\n- Successful creation with title and author.\n- Ordered listing and the empty-list state.\n- Removal and preservation of remaining order.\n- Rejection of empty title, empty author, and both fields empty.\n- Non-persistence of rejected submissions.\n\n## Programmatic Acceptance\n\n=== AC complete-suite ===\nIntent: The required POSIX test launcher runs the complete automated suite successfully.\nSuite: full\nRequires: executable=sh; scope=test\n\nimport subprocess\n\nresult = subprocess.run(\n [\"sh\", \"bin/test.sh\"],\n capture_output=True,\n text=True,\n)\nprint(result.stdout)\nprint(result.stderr)\nassert result.returncode == 0\n=== END AC complete-suite ===\n\n=== AC launcher-runs-from-root ===\nIntent: The test launcher is runnable from the application root using the required command.\nRequires: executable=sh; scope=test\n\nimport subprocess\n\nresult = subprocess.run(\n [\"sh\", \"bin/test.sh\"],\n capture_output=True,\n text=True,\n)\nprint(result.stdout)\nprint(result.stderr)\nassert result.returncode == 0\n=== END AC launcher-runs-from-root ===\n\n=== AC behavior-suite-command-exists ===\nIntent: The complete launcher invocation is the executable project verification boundary.\nRequires: executable=sh; scope=test\n\nimport subprocess\n\nresult = subprocess.run(\n [\"sh\", \"bin/test.sh\"],\n capture_output=True,\n text=True,\n)\nprint(result.stdout)\nprint(result.stderr)\nassert result.returncode in (0, 1)\n=== END AC behavior-suite-command-exists ===\n\n## User Acceptance\n\n- The complete suite can be run from the application root with `sh bin/test.sh`.\n\n## Guardrails\n\n- `bin/test.sh` must be POSIX-compatible.\n- The launcher must run the complete automated suite.\n- A nonzero test result must produce a nonzero launcher exit status.\n=== END ARTIFACT ==="}}
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