PR #58386: fix: emit cli-backends.runtime as standalone build entry

• Repository: openclaw/openclaw
• Author: Tug
• State: open | merged: False
• Link: https://github.com/openclaw/openclaw/pull/58386

Description (problem / solution / changelog)

Fixes #57326

What's broken

The claude-cli provider (and all CLI backend providers) fails with "Unknown model" errors on every request:

⚠️ Agent failed before reply: All models failed (5):
  claude-cli/claude-sonnet-4-6: Unknown model (model_not_found)
  claude-cli/claude-opus-4-6: Unknown model (model_not_found)
  ...

This affects anyone who configured the Anthropic Claude CLI auth method via openclaw agents add or openclaw configure --section model.

How to reproduce

1. openclaw agents add main → Anthropic → "Anthropic Claude CLI"
2. Send any message via TUI, Telegram, Slack, or openclaw agent
3. Every request fails with Unknown model: claude-cli/...

Root cause

Two independent issues prevent claude-cli from working:

1. CLI backend routing (commit 1): The CLI backends runtime module is not emitted as a standalone file by the bundler — it gets inlined into another chunk. At runtime, isCliProvider() silently fails to load the module and always returns false, so claude-cli requests are sent to the embedded inference runner instead of the CLI runner subprocess.

2. Provider hook resolution (commit 2): Even when the model resolver runs for claude-cli, the plugin ownership lookup and provider runtime hooks don't fire because claude-cli is only registered as a cliBackend, not as a provider or hookAlias on the Anthropic plugin. This was independently diagnosed in #57326 (comment).

Fix

Commit 1 — fix CLI backend routing:

• Register the CLI backends runtime as a standalone build entry (matching how provider-runtime.runtime is already registered)
• Fix the require() resolution pattern to anchor to the correct file location
• Add a build-smoke assertion to prevent silent regression

Commit 2 — fix provider hook resolution (credit: #57326 comment):

• Add claude-cli as a hookAlias on the Anthropic provider so matchesProviderId() and runtime hooks fire
• Include cliBackends in resolveOwningPluginIdsForProvider() so the plugin registry maps CLI backend IDs back to their owning plugin

May also partially address #57907.

Changed files

• extensions/anthropic/index.ts (modified, +2/-0)
• scripts/test-built-plugin-singleton.mjs (modified, +8/-0)
• src/agents/model-selection.ts (modified, +8/-1)
• src/plugins/providers.ts (modified, +8/-2)
• tsdown.config.ts (modified, +1/-0)