Changes between Version 3 and Version 4 of Prototype

Timestamp:

08/07/26 11:33:33 (9 days ago)

Author:

231285

Comment:

--

Prototype

@@ -63 +63 @@
  * There is no connection pooling configuration and no explicit isolation level; both are P8
    topics.
+
+== AI usage ==
+
+AI was used in this phase and is logged in full, per the course rule for P1 onward.
+
+ * '''Phase log:'''
+   [https://github.com/StefanTrsunov/bp/blob/main/docs/P4-Prototype/PrototypeImplementationAIUsage.md PrototypeImplementationAIUsage.md]
+   – service used, the bugs found and fixed, the test evidence, and what I decided myself.
+ * '''Full conversation transcript:'''
+   [https://github.com/StefanTrsunov/bp/blob/main/docs/P1-ConceptualModel/ERModelAIUsage.md ERModelAIUsage.md]
+   – the same conversation produced the P1–P4 artefacts, so the complete prompt/response log is
+   kept in one place. Direct links:
+   [https://github.com/StefanTrsunov/bp/blob/main/docs/P1-ConceptualModel/ERModelAIUsage.md#session-1--2026-04-21 Session 1 – 2026-04-21],
+   [https://github.com/StefanTrsunov/bp/blob/main/docs/P1-ConceptualModel/ERModelAIUsage.md#session-2--2026-08-06--2026-08-07 Session 2 – 2026-08-06/07].
+
+'''Service:''' Claude Code (Anthropic), https://claude.com/claude-code – Claude subscription,
+model Claude Opus 4.7 (1M context).
+
+'''In short:''' session 1 rewrote the existing Chi/HTTP backend as the CLI prototype covering
+UC0001–UC0007 and added the market bot. Session 2 was a review pass I asked for, which found and
+fixed three bugs – a path-resolution bug that made the documented build instructions fail, an
+infinite loop at end of input, and an error check in the wrong order that misreported database
+failures as "Insufficient holding" – and replaced the read-modify-write holding update with a
+single `INSERT … ON CONFLICT DO UPDATE`.