[Bug]: Plugin silently fails to load — missing transitive dep 'tiktoken' (3.1.13)

[licat2023]

Summary

On a fresh install, the plugin silently fails to load: no /dcp or /dcp-compress commands, no compress tool, no prune notifications, and no debug logs are ever written even with "debug": true. The root cause is a missing transitive dependency tiktoken in the installed plugin tree, which makes importing the plugin entry throw before any of DCP's code runs.

Environment

• OS: Windows 11
• opencode: 1.17.9 (reproduced in both the Electron Desktop app and the terminal TUI)
• DCP: @tarquinen/opencode-dcp@latest → resolved to 3.1.13
• Installed via: opencode plugin @tarquinen/opencode-dcp@latest --global

Root cause

The package's runtime dependency chain is:

@tarquinen/opencode-dcp
  └─ @anthropic-ai/tokenizer@0.0.4
       └─ tiktoken@^1.0.10   ← NOT installed

opencode installs DCP into its plugin cache at
~/.cache/opencode/packages/@tarquinen/opencode-dcp@latest/node_modules.
That tree contains @anthropic-ai/tokenizer but tiktoken is missing entirely (no directory anywhere under it). Because @anthropic-ai/tokenizer/dist/cjs/index.js does require("tiktoken/lite"), importing the plugin entry throws:

Cannot find module 'tiktoken/lite' from
'...\.cache\opencode\packages\@tarquinen\opencode-dcp@latest\node_modules\@anthropic-ai\tokenizer\dist\cjs\index.js'

opencode catches this and silently drops the plugin — nothing is surfaced to the user, which is why it looks like the install "did nothing" (commands absent, no logs even with debug on).

Reproduction

1. Install on a clean machine: opencode plugin @tarquinen/opencode-dcp@latest --global, restart opencode.
2. Observe /dcp is not available and ~/.config/opencode/logs/dcp/ is never created (even with "debug": true in dcp.jsonc).
3. Confirm the broken import directly:

bun -e "await import('file:///<HOME>/.cache/opencode/packages/@tarquinen/opencode-dcp@latest/node_modules/@tarquinen/opencode-dcp/dist/index.js').then(m=>console.log('OK')).catch(e=>console.log('IMPORT ERROR:',e.message))"
# IMPORT ERROR: Cannot find module 'tiktoken/lite' from '...@anthropic-ai/tokenizer/dist/cjs/index.js'

Workaround (confirmed fix)

Manually installing the missing transitive dep into the plugin cache resolves it; after restart /dcp + /dcp-compress appear and debug logs are written:

npm install tiktoken@^1.0.10 --no-save --prefix "$HOME\.cache\opencode\packages\@tarquinen\opencode-dcp@latest"

After the patch the same import returns OK.

Suggested fix

tiktoken is currently only a transitive dependency, and opencode's installer is not pulling it. Two options inside DCP's control:

1. (preferred, minimal) Promote tiktoken to a direct dependency in package.json. Direct deps are installed reliably by opencode's installer; the failing one here was a child of @anthropic-ai/tokenizer.
2. Bundle @anthropic-ai/tokenizer via tsup noExternal (the same approach already used for jsonc-parser). Note tiktoken ships a .wasm, so this path needs wasm asset handling.

This is the same class of "plugin silently fails to load" regression seen in #432, #507, and #511, all of which were addressed by bundling more into the tsup output (PR #499). This time the trigger is the un-installed tiktoken transitive dep specifically.

[licat2023]

Opened a fix PR: #576 (promotes iktoken to a direct dependency).