Task 007: インタラクティブ計算機

セッション情報

• 日時: 2026-02-23
• 所要時間: 10分
• モデル: claude-opus-4-6
• メッセージ数: 118
• ツール呼出: 81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

[18:51] 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.

• Bash — List current tasks
• Bash — List ideas directory
• Read — /workspace/DESIGN.md

[18:51] アシスタント

Let me check the status of existing tasks and the ideas files for what to work on next.

• Read — /workspace/current_tasks/006_episode_1_analysis.md
• Read — /workspace/ideas/ep01_mass_ambiguity.md
• Read — /workspace/ideas/interactive_brachistochrone.md
• Read — /workspace/ideas/data_contracts_early.md

[18:51] アシスタント

All 6 tasks are DONE. I need to create new tasks. Let me check the existing codebase to understand what's been built so far and identify the best next steps.

• Task — Explore codebase for next tasks

[18:52] アシスタント

All 6 tasks are complete. I'll create new tasks based on the ideas and project goals, then claim one to work on.

• TodoWrite — update task list
• Write — → /workspace/current_tasks/007_interactive_brachistochrone_calculator.md
• Write — → /workspace/current_tasks/008_episode_2_analysis.md
• Write — → /workspace/current_tasks/009_subtitle_attribution.md
• TodoWrite — update task list

[18:52] アシスタント

Now let me claim Task 007 and start working. First, let me read the existing code I'll be building on.

• Read — /workspace/crates/solar-line-core/src/lib.rs
• Read — /workspace/crates/solar-line-core/src/orbits.rs
• Read — /workspace/crates/solar-line-wasm/src/lib.rs
• Read — /workspace/ts/src/orbital.ts

[18:53] アシスタント

Good. Now let me read the existing templates and report structure to understand how to add the interactive calculator.

• Read — /workspace/ts/src/templates.ts
• Read — /workspace/ts/src/report-types.ts
• Read — /workspace/ts/src/build.ts
• Read — /workspace/reports/data/episodes/ep01.json

[18:53] アシスタント

Now I have a clear picture. Let me consult Codex on the design approach for the interactive calculator before implementing.

• TodoWrite — update task list
• Skill — nice-friend
• Bash — Consult Codex on brachistochrone calculator design

[18:54] アシスタント

Codex recommends:

1. Both WASM + JS fallback (my lean confirmed)
2. Option B (separate JS file) over inline — better testability and cleaner templates
3. Fix WASM copy path in build.ts (good catch)
4. Add input guards, assumptions line, and compact verdict badge

I'll follow Codex's recommendations. Let me now implement step by step.

• TodoWrite — update task list

[18:54] アシスタント

First, let me read the Rust units to understand the newtype pattern, then add brachistochrone functions.

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

[18:55] アシスタント

Good. Now I need to add brachistochrone functions. The brachistochrone doesn't use any of the existing newtypes in a particularly complex way — it takes distance (Km), time (Seconds), and returns acceleration (new unit: KmPerSec2) or ΔV (KmPerSec). Let me keep it simple and just use existing types.

Now let me implement everything. I'll work on multiple files in parallel:

1. Add brachistochrone module to Rust core
2. Export via WASM bridge
3. Create the browser JS calculator file
4. Update templates + build

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

[18:55] アシスタント

I already read this file earlier. Let me re-read and edit:

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

[18:55] アシスタント

Now add the tests for the new functions and update the re-exports:

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

[18:55] アシスタント

Now update the lib.rs re-exports:

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

[18:55] アシスタント

Now add WASM bridge exports:

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

[18:56] アシスタント

Now add WASM tests for brachistochrone:

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

[18:56] アシスタント

Now let me build and test the Rust code:

• Bash — Run all Rust tests

[18:56] アシスタント

Need to add Seconds to the import in orbits.rs:

• Read — /workspace/crates/solar-line-core/src/orbits.rs
• Edit — /workspace/crates/solar-line-core/src/orbits.rs
• Bash — Run all Rust tests

[18:56] アシスタント

All 52 Rust tests pass (41 core + 11 WASM). Now let me create the browser calculator JS and update the templates.

• TodoWrite — update task list
• Write — → /workspace/ts/src/calculator.js

[18:57] アシスタント

Now update the templates to add the calculator UI to episode pages and update the build to copy the calculator JS:

• TodoWrite — update task list

[18:57] アシスタント

Now I need to add CSS for the calculator and the calculator HTML to the template. Let me add a renderCalculator function and integrate it into renderEpisode:

• Read — /workspace/ts/src/templates.ts

[18:57] アシスタント

Now I'll add the calculator CSS and the renderCalculator function, and update renderEpisode to include it:

• Edit — /workspace/ts/src/templates.ts

[18:57] アシスタント

Now add the renderCalculator function and update renderEpisode:

• Edit — /workspace/ts/src/templates.ts

[18:58] アシスタント

Now update build.ts to copy the calculator JS file and fix the WASM copy path:

• Read — /workspace/ts/src/build.ts

[18:58] アシスタント

I need to understand the directory relationship. When the build runs from ts/, dataDir defaults to ../reports. The pkg directory is at ts/pkg. Let me check:

• Bash — Check if WASM pkg exists

[18:58] アシスタント

Good, ts/pkg exists with the WASM artifacts. The build's current WASM path path.join(dataDir, "..", "pkg") resolves from ../reports/../pkg = ../pkg which from the ts/ working directory = /workspace/pkg (wrong). The actual pkg is at /workspace/ts/pkg. Let me fix this and add the calculator JS copy:

• Edit — /workspace/ts/src/build.ts

[18:58] アシスタント

Now let me write tests. I need to add tests for the calculator and the new template functions:

• Read — /workspace/ts/src/templates.test.ts

[18:58] アシスタント

Now add tests for the calculator template:

• Edit — /workspace/ts/src/templates.test.ts
• Edit — /workspace/ts/src/templates.test.ts

[18:58] アシスタント

Now add WASM round-trip tests for the new brachistochrone functions:

• Read — /workspace/ts/src/wasm.test.ts
• Edit — /workspace/ts/src/wasm.test.ts
• Edit — /workspace/ts/src/wasm.test.ts

[18:59] アシスタント

Now let me build the WASM and run all the tests:

• TodoWrite — update task list
• Bash — Build WASM for nodejs testing
• Bash — Run all TypeScript tests

[18:59] アシスタント

All 134 TypeScript tests pass, including the 9 new calculator/template tests and 4 new WASM brachistochrone tests. Let me verify the full pipeline now:

• TodoWrite — update task list
• Bash — Build the static site
• Bash — Check dist output for calculator and WASM files

[18:59] アシスタント

The calculator JS and WASM files are all being copied to dist. Let me verify the episode page includes the calculator:

• Grep — /calculator|calc-section|Interactive Brachistochrone/

[18:59] アシスタント

The episode page includes the calculator widget and links to the calculator JS. Now let me write the session log, update the task status, and commit:

• Write — → /workspace/reports/logs/2026-02-23-interactive-calculator.md

[19:00] アシスタント

Now update the task file status:

• Read — /workspace/current_tasks/007_interactive_brachistochrone_calculator.md
• Write — → /workspace/current_tasks/007_interactive_brachistochrone_calculator.md

[19:00] アシスタント

Now rebuild the site to include the new session log, then commit and push:

• Bash — Rebuild site with new session log
• TodoWrite — update task list

[19:00] アシスタント

Now update the memory file and commit:

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

[19:00] アシスタント

Now commit and push:

• Bash — Show working tree status
• Bash — Show diff summary
• Bash — Show recent commits
• Bash — Stage all task 007 files
• Bash — Commit task 007 changes
• Bash — Push to origin
• TodoWrite — update task list

[19:01] アシスタント

Task 007 is complete. Here's a summary of what was done:

Task 007: Interactive Brachistochrone Calculator — DONE

What was built

• Rust core: 3 new brachistochrone functions (brachistochrone_accel, brachistochrone_dv, brachistochrone_max_distance) in orbits.rs
• WASM bridge: All 3 functions exported (19 total exports now)
• Browser calculator (calculator.js): WASM-first with JS fallback

- 3 sliders: distance (AU), ship mass (tonnes), transfer time (hours)

- 4 presets: Episode 1 canonical, normal route, mass=48t, mass=4800t

- Result table comparing required vs ship capability

- Verdict badge (within spec / marginal / Nx shortfall)

• Template: renderCalculator() embedded in all episode report pages
• Build fixes: Fixed WASM copy path bug (Codex-identified), added calculator.js copy

Test results

• 52 Rust tests + 134 TypeScript tests = 186 total, all passing

Next tasks available

• Task 008: Episode 2 content analysis
• Task 009: Subtitle collection & speaker attribution