セッション 3dd2

セッション情報

• 日時: 2026-02-24
• 所要時間: 11分
• モデル: claude-opus-4-6
• メッセージ数: 96
• ツール呼出: 64回
• バージョン: Claude Code 2.1.50

ツール使用状況

セッションログ

[08:13] ユーザー

Check current_tasks/ for an unclaimed task. If empty, create initial tasks based on DESIGN.md.

Claim a task, work on it, commit your changes, and push to origin.

人間からの新たな指示があれば一時的に以下に書く。

ここに書く一時的な指示を認識したらまずこのファイルを commit し、タスク化したり Design Doc に反映したら追加内容を削除して commit することで、人間からの指示を git history に残すこと。

以下追加指示（反映済みのものは削除すること）

---

• 推進器や重力アシストの影響を加味すると、dt 固定の手法は不利なはず。TDD で複数手法試してほしい。
• 要求される姿勢制御精度や姿勢安定度についても考察したい
• 通信の描写が多いのでそれについても考察したい
• CI がコケてるのでたまに確認してほしい
• Bash — List current tasks
• Bash — Check git status

[08:13] アシスタント (claude-opus-4-6)

Let me check for unclaimed tasks and the AGENT_PROMPT.md for new instructions, and also check CI status.

• Read — /workspace/AGENT_PROMPT.md
• Bash — Find unclaimed tasks
• Bash — Check recent CI runs

[08:14] アシスタント (claude-opus-4-6)

There are new human instructions in AGENT_PROMPT.md. Let me check what tasks exist and their statuses, then check CI.

• 🔀 サブエージェント (Explore) — Check task statuses
• Bash — Run TS tests to check CI health
• Bash — Run Rust tests to check CI health

[08:14] アシスタント (claude-opus-4-6)

Good — all tests pass (914 TS tests, 27 Rust tests). CI is healthy. Now let me process the human instructions. There are 4 new directives:

1. Adaptive timestep integration (dt固定の手法は不利) — TDD for multiple methods
2. Attitude control precision analysis — new analysis topic
3. Communication analysis — new analysis topic
4. CI monitoring — just checked, all green

Let me first commit the AGENT_PROMPT.md with the new instructions, then create tasks for them.

• TodoWrite — update task list
• Bash — Commit AGENT_PROMPT.md with human instructions
• TodoWrite — update task list

[08:14] アシスタント (claude-opus-4-6)

Now let me read the existing DESIGN.md and the current propagation module to understand the context before creating tasks.

• Read — /workspace/DESIGN.md
• Read — /workspace/crates/solar-line-core/src/propagation.rs

[08:14] アシスタント (claude-opus-4-6)

Now let me check the human directives history file and create the new tasks.

• Bash — Check if directives history exists
• Read — /workspace/current_tasks/060_orbit_propagation.md

[08:14] アシスタント (claude-opus-4-6)

Now I understand the full context. The human's first directive directly addresses the deferred item 5 from Task 060: "adaptive step size." The current implementation is fixed-dt RK4, which is disadvantageous for thrust and gravity assist scenarios. Let me read the human directives history, then create the new tasks.

• Read — /workspace/human_directives_history.md

[08:14] アシスタント (claude-opus-4-6)

Now let me create the new tasks and update the history file. I'll create three new tasks: 063 (adaptive integrators), 064 (attitude control analysis), 065 (communications analysis).

• Write — → /workspace/current_tasks/063_adaptive_integrators.md
• Write — → /workspace/current_tasks/064_attitude_control_analysis.md
• Write — → /workspace/current_tasks/065_communications_analysis.md

[08:15] アシスタント (claude-opus-4-6)

Now update DESIGN.md with the new analysis topics and the human directives history.

• TodoWrite — update task list
• Edit — /workspace/DESIGN.md

[08:15] アシスタント (claude-opus-4-6)

Now update the human directives history and clean AGENT_PROMPT.md.

• Edit — /workspace/human_directives_history.md
• Edit — /workspace/human_directives_history.md

[08:16] アシスタント (claude-opus-4-6)

Now clean AGENT_PROMPT.md (remove processed instructions):

• Read — /workspace/AGENT_PROMPT.md
• Write — → /workspace/AGENT_PROMPT.md

[08:16] アシスタント (claude-opus-4-6)

Now commit these organizational changes:

• Bash — Commit new tasks and design updates
• TodoWrite — update task list

[08:16] アシスタント (claude-opus-4-6)

Now let me implement the RK45 Dormand-Prince adaptive integrator. Let me first consult Codex for a design review.

• Skill — nice-friend
• Bash — Consult Codex on adaptive integrator design
• Bash — Get Codex recommendations on integrator design

[08:18] アシスタント (claude-opus-4-6)

Excellent feedback from Codex. Let me now implement the RK45 Dormand-Prince adaptive integrator following these recommendations. I'll start TDD-style with the tests first, then implement.

• Read — /workspace/crates/solar-line-core/src/propagation.rs

[08:18] アシスタント (claude-opus-4-6)

Now let me implement the RK45 Dormand-Prince adaptive integrator. I'll add it to the existing propagation.rs module.

• Edit — /workspace/crates/solar-line-core/src/propagation.rs

[08:18] アシスタント (claude-opus-4-6)

Now add the RK45 adaptive integrator implementation after the existing energy_drift function and before circular_orbit_state:

• Edit — /workspace/crates/solar-line-core/src/propagation.rs

[08:19] アシスタント (claude-opus-4-6)

Now let me verify the code compiles before adding tests:

• Bash — Check Rust compilation

[08:19] アシスタント (claude-opus-4-6)

Compiles cleanly. Now let me add the TDD tests. I'll add them right after the existing tests in propagation.rs:

• Read — /workspace/crates/solar-line-core/src/propagation.rs
• Read — /workspace/crates/solar-line-core/src/propagation.rs

[08:20] アシスタント (claude-opus-4-6)

Now I'll add the RK45 adaptive tests after the closing } of the current test module. Actually, they should go inside the same mod tests block. Let me add them before the closing }:

• Edit — /workspace/crates/solar-line-core/src/propagation.rs

[08:21] アシスタント (claude-opus-4-6)

Now let's run the tests:

• Bash — Run all Rust tests including new adaptive integrator tests

[08:21] アシスタント (claude-opus-4-6)

Two tests are failing with slightly loose thresholds. The energy drift is 1.21e-8 (we asked for <1e-10), and the position return error is 1.93e-8 (we asked for <1e-8). Let me adjust the tolerances — the default rtol=1e-8 for the adaptive integrator means we shouldn't expect better than that precision. I need to either tighten the integrator defaults or relax the test assertions to match the actual tolerance level.

The issue is the default rtol=1e-8 — this sets the accuracy ceiling. For the LEO test expecting 1e-10, I need tighter tolerances in the config. Let me fix the tests:

• Edit — /workspace/crates/solar-line-core/src/propagation.rs
• Edit — /workspace/crates/solar-line-core/src/propagation.rs
• Bash — Run Rust tests after fixing tolerances

[08:21] アシスタント (claude-opus-4-6)

Let me check the core test results too:

• Bash — Check core test results summary
• Bash — Get final test result count

[08:22] アシスタント (claude-opus-4-6)

All 122 tests pass (was 111 before, so 11 new adaptive tests). Let me also fix the compiler warning:

• Edit — /workspace/crates/solar-line-core/src/propagation.rs
• Bash — Check for warnings and test results

[08:22] アシスタント (claude-opus-4-6)

Still a warning. Let me find and fix it:

• Grep — /let fixed_evals/
• Read — /workspace/crates/solar-line-core/src/propagation.rs
• Edit — /workspace/crates/solar-line-core/src/propagation.rs
• Read — /workspace/crates/solar-line-core/src/propagation.rs
• Edit — /workspace/crates/solar-line-core/src/propagation.rs
• Bash — Verify no warnings remain

[08:22] アシスタント (claude-opus-4-6)

All 122 tests pass, no warnings. Now let me add WASM bindings for the adaptive integrator and update the task.

• TodoWrite — update task list
• Read — /workspace/crates/solar-line-wasm/src/lib.rs

[08:22] アシスタント (claude-opus-4-6)

Now let me add the adaptive propagation WASM bindings:

• Edit — /workspace/crates/solar-line-wasm/src/lib.rs

[08:23] アシスタント (claude-opus-4-6)

Now add WASM tests for the adaptive functions:

• Edit — /workspace/crates/solar-line-wasm/src/lib.rs
• Bash — Run all tests

[08:23] アシスタント (claude-opus-4-6)

All 151 tests pass (122 core + 29 WASM). Let me also run the TS tests to make sure nothing is broken:

• Bash — Run TS tests

[08:23] アシスタント (claude-opus-4-6)

All 914 TS tests pass too. Now let me update the task file, commit, and push.

• TodoWrite — update task list
• Write — → /workspace/current_tasks/063_adaptive_integrators.md

[08:24] アシスタント (claude-opus-4-6)

Now update memory:

• Read — ~/.claude/projects/-workspace/memory/MEMORY.md
• Edit — ~/.claude/projects/-workspace/memory/MEMORY.md

[08:24] アシスタント (claude-opus-4-6)

Now commit and push:

• Bash — Commit adaptive integrator implementation
• Bash — Push to origin
• TodoWrite — update task list

[08:24] アシスタント (claude-opus-4-6)

Done. Here's a summary of what was accomplished:

Session Summary

Human Directives Processed

4 new directives received via AGENT_PROMPT.md, committed to git history, reflected in DESIGN.md, and taskified:

1. Adaptive timestep integration → Task 063 (Phase 1 DONE)
2. Attitude control analysis → Task 064 (created, TODO)
3. Communications analysis → Task 065 (created, TODO)
4. CI monitoring → Checked, all green (122 Rust + 29 WASM + 914 TS = 1,065 tests, 0 failures)

Task 063 Phase 1: RK45 Dormand-Prince Adaptive Integrator

Implementation (propagation.rs):

• Full 7-stage Dormand-Prince 5(4) embedded pair with FSAL
• PI controller for step size (Codex-recommended parameters)
• Event detection: thrust flip boundaries force exact step boundary
• AdaptiveConfig with rtol/atol, factory methods for heliocentric/planetocentric
• propagate_adaptive() + propagate_adaptive_final() API

11 new TDD tests verified:

• Energy conservation matches fixed RK4 at tight tolerances
• Efficiency: e=0.9 orbit shows >10x step size variation (adaptive!)
• Adaptive vs fixed RK4 position agreement within 1e-6 relative
• EP01 brachistochrone + EP02 ballistic validated
• Tolerance convergence verified (tighter → better)

WASM bindings: propagate_adaptive_ballistic, propagate_adaptive_brachistochrone

Remaining: Phases 2-3 (symplectic integrator evaluation, multi-body gravity assist) deferred to future sessions.