<!-- event: create author: "yoi ticket" at: 2026-07-10T22:31:21Z -->

## 作成

LocalTicketBackend によって作成されました。

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<!-- event: intake_summary author: hare at: 2026-07-10T22:31:40Z -->

## Intake summary

Marked ready by `yoi ticket state`.

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<!-- event: state_changed author: "yoi ticket" at: 2026-07-10T22:31:40Z from: planning to: ready reason: cli_state field: state -->

## State changed

Marked ready by `yoi ticket state`.


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<!-- event: state_changed author: "yoi ticket" at: 2026-07-10T22:31:41Z from: ready to: queued reason: queued field: state -->

## State changed

Ticket を `yoi ticket` が queued にしました。


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<!-- event: state_changed author: "yoi ticket" at: 2026-07-10T22:31:41Z from: queued to: inprogress reason: cli_state field: state -->

## State changed

State changed to `inprogress`.


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<!-- event: implementation_report author: hare at: 2026-07-10T22:45:55Z -->

## Implementation report

Implemented rich Workspace Console rendering.

- Added safe Markdown-to-HTML rendering for console bodies; raw HTML is escaped.
- Added Shiki highlighting for fenced code blocks.
- Added TUI-inspired Console colors for message kinds, tool types, tool states, and diff rows.
- Added structured Edit diff projection using old_string/new_string and rendered add/remove/context rows.
- Kept Read aggregate behavior: consecutive Read calls are grouped and file content is not shown in the body.
- Added tests for Markdown escaping/Shiki rendering and Edit diff projection.

Validation:
- cd web/workspace && deno task check
- cd web/workspace && deno task test
- git diff --check
- nix build .#yoi --no-link


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<!-- event: state_changed author: "yoi ticket" at: 2026-07-10T22:45:55Z from: inprogress to: done reason: cli_state field: state -->

## State changed

State changed to `done`.


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<!-- event: state_changed author: hare at: 2026-07-10T22:46:12Z from: done to: closed reason: closed field: state -->

## State changed

Ticket を closed にしました。


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<!-- event: close author: hare at: 2026-07-10T22:46:12Z status: closed -->

## 完了

Added rich Workspace Console rendering: safe markdown HTML output, Shiki-highlighted fenced code blocks, TUI-inspired coloring for message/tool state, and structured Edit diff rows. Read aggregation continues to avoid displaying file content. Validation passed with frontend check/test, diff check, and Nix build.


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