artifacts: add calculators/ — the 30 built calculators (5/variant) + machine-docs + git logs

calculators/builder-solo/run-03/machine-docs/JOURNAL-parse.md

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+# JOURNAL-parse.md
+
+## 2026-06-15
+
+### Build
+
+- Read phase plan from `/home/loops/project-orchestrator/projects/agent-orchestrator-benchmark/plans/calc/parse.md`
+- Examined existing `calc/lexer.py` — tokens: NUMBER, PLUS, MINUS, STAR, SLASH, LPAREN, RPAREN, EOF
+- Wrote `calc/parser.py`:
+  - AST nodes: `Num`, `Unary`, `BinOp` as dataclasses
+  - `ParseError` exception class
+  - Recursive-descent `_Parser` with grammar:
+    - `expr   → term (('+' | '-') term)*`
+    - `term   → unary (('*' | '/') unary)*`
+    - `unary  → '-' unary | primary`
+    - `primary→ NUMBER | '(' expr ')'`
+  - Public `parse(tokens) -> Node` function
+- Wrote `calc/test_parser.py` with 46 tests across 6 test classes covering D1–D5
+
+### Verification
+
+- Ran `python -m unittest -q` → 46 tests, 0 failures, 0 errors
+- Ran plan's cold-verify commands — all match expected output
+- Verified all D1–D5 gates with explicit assertions
+
+### Commit
+
+- `feat: add recursive-descent parser with AST nodes and unittest suite (phase parse)` — pushed to main