cloudflare/agents @cloudflare/think@0.21.0 on GitHub

#2561 998ae40 Thanks @mattzcarey! - Think's workspace tools are now @cloudflare/computer's createAITools, and exec offers every backend the Workspace has; createWorkspaceTools, workspaceBash, and @cloudflare/think/tools/workspace are removed. See Built-in workspace tools.
#2560 8c720d3 Thanks @mattzcarey! - Think's workspace is now a Workspace from @cloudflare/computer, a new peer dependency. See Upgrading to a Computer workspace.
#2562 db4303c Thanks @mattzcarey! - Think no longer depends on @cloudflare/shell, and the execute tool's state option is removed. See Code Execution Tool.
#2565 f56cd20 Thanks @mattzcarey! - createExecuteTool and createExecuteRuntime are deprecated in favour of exec with a ws:tools module. See Calling the agent's tools from code.

#2615 05843e4 Thanks @mattzcarey! - Chat recovery now seals a turn after chatRecovery.maxInterruptedAttempts interrupted attempts (default 5), so a turn that exceeds the Durable Object memory limit on every run no longer retries forever; maxOomRetries is deprecated. See Stream Recovery.
#2593 b905483 Thanks @ben-reitz! - Reuse one Intl.DateTimeFormat per timezone when computing wall-clock scheduled task occurrences, cutting the CPU cost of each occurrence substantially. See #2583; thanks @Bowiemb.