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Implements c_project_create (03-C §3.0) as a plain function for U-007 to wire up later: idempotent by target_folder_path, creates .graphlemon/ + one init commit in an existing git repo, PATH_NOT_FOUND/PATH_NOT_WRITABLE/ GIT_INIT_DECLINED per contract, never silently `git init`s (02-V §2.1). Also corrects a real SDD-vs-plan conflict found while scoping this Unit: development-plan.md's U-002 line cited architecture doc §7.3's directory tree (.claude/agents/, skills/, top-level runs/) as what to create inside a target project. But §13.1 (a later, confirmed decision) states those are graphlemon's own platform-repo assets (U-003 scope), and 01-M's own graphlemon_subdir_initialized field already points at §13.2, whose target- project tree is only .git/ + .graphlemon/ + the target's pre-existing src/. §7.3 predates the "target project is an independent code space" pivot and was superseded by it. Corrected development-plan.md, unit_matrix.json, CLAUDE.md, and 05-实施约束与依赖.md accordingly (user confirmed, 2026-07-31). 23 stdlib unittest cases (src/test_schema.py + new src/test_project_scaffold.py), all passing. Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
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Implements docs/sdd/01-M-模型设计.md §1.0-1.14 as stdlib sqlite3 DDL in src/ (deployment/deploy_health_signal §1.15-1.16 are PH5/U-034, deliberately excluded). Covers all entities' fields, enum CHECK constraints, FKs, and the two non-trivial unique indexes (work_graph_run's per-(task_id,org_node) active-run partial index, artifact's (task_id,artifact_type,git_commit_sha) composite key). Per user decision (2026-07-30): bug_record.root_cause_category excludes 'core_engine' for now -- that value is PH5-scoped and development-plan.md assigns adding it to U-034, not U-001; a test locks this in. 14 stdlib unittest cases in src/test_schema.py cover table creation and the Done criterion's named constraint classes (unique/FK/enum), all passing. Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
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Establishes the first commit for graphlemon before U-001 work begins: architecture/SDD docs (including the PH5 self-hosting design already folded into 01-M/03-C/04-P/mvcp-contract v1.7.0), the A-1 spike results, the graphloop-adapted supervisor/isolation utilities, PH3 wireframe prototypes (now cross-referenced from 02-V), and this session's development-plan review (U-024 dependency split, U-035 regression requirement, new U-004.5 e2e-harness unit, src/ directory convention). Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>