CubicSDR/AGENT-LOG.md

Agent Session Log

Session 1: Project Evaluation and Planning

Date: 2026-07-23 Model: opencode/big-pickle

Actions

1. Explored the CubicSDR codebase structure, technology stack, and key directories
2. Analyzed code quality: TODO/FIXME markers, test coverage, memory safety, build system, documentation, git hygiene, vendored dependencies
3. Generated RECOMMENDATIONS.md with evaluation summary and 10 priority-ranked recommendations
4. Generated PLAN.md with detailed implementation plans for each recommendation
5. Created docs/design/ directory with 4 architecture documents (README.md, signal-flow.md, threading.md, modem-system.md)
6. Split PLAN.md into 10 individual plan files under docs/plans/
7. Created AGENTS.md and AGENT-LOG.md

Files Created

File	Description
docs/RECOMMENDATIONS.md	Project evaluation and priority-ranked recommendations
docs/PLAN.md	Index of implementation plans with risk/effort estimates
docs/design/README.md	Architecture overview, source layout, key class reference
docs/design/signal-flow.md	Data path from SDR hardware to audio output
docs/design/threading.md	Thread inventory, synchronization, lifecycle
docs/design/modem-system.md	Factory registration, modem hierarchy, available modems
docs/plans/add-unit-tests.md	Test infrastructure and initial test coverage
docs/plans/fix-gitignore.md	Comprehensive .gitignore patterns
docs/plans/modernize-cmake.md	CMake 2.8 → 3.14+ modernization
docs/plans/smart-pointers.md	Replace raw new/delete with std::unique_ptr
docs/plans/split-appframe.md	Split monolithic AppFrame.cpp into multiple files
docs/plans/remove-c4996-suppression.md	Address unsafe CRT function usage
docs/plans/replace-reinterpret-cast.md	Fix undefined behavior in DataTree
docs/plans/update-vendored-deps.md	Update or replace third-party libraries
docs/plans/add-ci-test-execution.md	Run tests in CI pipeline
docs/plans/resolve-todos.md	Address open TODO/FIXME markers
AGENTS.md	Agent instructions and project documentation index

Session 2: Documentation Refinement (Sessions 2-4 Combined)

Date: 2026-07-23 Model: opencode/big-pickle

Multiple iterative passes over the documentation to fix errors, add missing content, and improve quality:

• Fixed broken cross-references in plan files (numeric prefix remnants)
• Added verification criteria and rollback strategies to all plan files
• Added cross-references between plan files and architecture docs
• Verified ~50+ factual claims against source code, fixed 13 errors (source counts, reinterpret_cast counts, TODO counts, threading claims, CI status, dependency versions)
• Created then deleted CONTRIBUTING.md and docs/MAINTAINING.md (not actionable)
• Expanded update-vendored-deps.md with detailed API migration tables (TinyXML→TinyXML-2, CubicVR2→glm)
• Expanded add-unit-tests.md with Phase 3 test modules
• Expanded smart-pointers.md with thread lifecycle analysis

Session 3: Documentation Debrittling

Date: 2026-07-23 Model: opencode/big-pickle

Actions

1. Evaluated all docs files for brittle/noise content that would drift from the codebase during iterative development
2. Removed "Last Updated" timestamps from all 17 documentation files
3. Removed redundant "CubicSDR is a cross-platform..." preambles from all 10 plan files
4. Removed "Key Strengths" section from RECOMMENDATIONS.md (subjective, doesn't drive action)
5. Removed TODO/FIXME inventory table from RECOMMENDATIONS.md (redundant with resolve-todos.md)
6. Removed exact counts from RECOMMENDATIONS.md ("~197 source files", "18 TODOs", "~177 of 197")
7. Removed brittle line numbers from smart-pointers.md and modernize-cmake.md
8. Removed Testability Assessment table from add-unit-tests.md
9. Removed theoretical "Design Considerations: Join vs. Detach" section from smart-pointers.md
10. Added Documentation Guidelines section to AGENTS.md prohibiting brittle content in future docs

Files Modified

File	Action
docs/RECOMMENDATIONS.md	Removed strengths section, TODO table, exact counts, timestamp
docs/PLAN.md	Removed timestamp
docs/plans/add-unit-tests.md	Removed preamble, timestamp, Testability Assessment table
docs/plans/fix-gitignore.md	Removed preamble, timestamp
docs/plans/modernize-cmake.md	Removed preamble, timestamp, brittle line numbers
docs/plans/smart-pointers.md	Removed preamble, timestamp, brittle line numbers, theoretical section
docs/plans/split-appframe.md	Removed preamble, timestamp
docs/plans/remove-c4996-suppression.md	Removed preamble, timestamp
docs/plans/replace-reinterpret-cast.md	Removed preamble, timestamp
docs/plans/update-vendored-deps.md	Removed preamble, timestamp
docs/plans/add-ci-test-execution.md	Removed preamble, timestamp
docs/plans/resolve-todos.md	Removed preamble, timestamp
docs/design/README.md	Removed timestamp
docs/design/signal-flow.md	Removed timestamp
docs/design/threading.md	Removed timestamp
docs/design/modem-system.md	Removed timestamp
AGENTS.md	Added Documentation Guidelines section

Session 4: Log Compaction

Date: 2026-07-23 Model: opencode/big-pickle

Problem

Sessions 2-4 were iterative fixes to each other's work: adding timestamps → removing them, adding sections → deleting them, fixing counts → re-fixing them. This created confusion about the final state and made the log harder to use as a reference.

Solution

Compressed sessions 2-4 into a single summary paragraph. The final state is what matters; the back-and-forth process of arriving at it is noise.

Lesson Learned

Logs should capture outcomes, not process. If something is added then later removed in the same session, just note the removal and why — don't keep the full history of adding it. A log entry that says "added timestamps to all files" followed later by "removed timestamps from all files" leaves the reader unsure which state is current.