feat: add Singly Linked List data structure (Phase 4) - #10
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- Add src/data_structures/linked_list.py implementing a head/tail tracked singly linked list with O(1) append/prepend and iterative O(n) search, delete, and in-place reversal. - Add Linked List tests to tests/test_data_structures.py covering append/prepend (including empty-list prepend), search, deletion at every position (head/middle/tail/only-node), reversal, and empty-list reversal, with full coverage. - Expose Linked List via the service layer: build_and_query_linked_list wrapper in service/tools.py, MCP tool, and POST /data-structures/linked-list endpoint, each with tests. - Add ADR 0015 documenting the iterative pointer-rewiring design. - Update README and ROADMAP; this completes Phase 4.
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- Add src/data_structures/linked_list.py implementing a head/tail tracked singly linked list with O(1) append/prepend and iterative O(n) search, delete, and in-place reversal. - Add Linked List tests to tests/test_data_structures.py covering append/prepend (including empty-list prepend), search, deletion at every position (head/middle/tail/only-node), reversal, and empty-list reversal, with full coverage. - Expose Linked List via the service layer: build_and_query_linked_list wrapper in service/tools.py, MCP tool, and POST /data-structures/linked-list endpoint, each with tests. - Add ADR 0015 documenting the iterative pointer-rewiring design. - Update README and ROADMAP; this completes Phase 4.
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Adds a head/tail tracked Singly Linked List with O(1) append/prepend and iterative search/delete/reversal, exposed through the existing MCP/HTTP service layer as well as src/, with full test coverage and ADR 0015. This completes Phase 4.