feat: add configurable system prompt preamble via file override - #62
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feat: add configurable system prompt preamble via file override#62NOVA-Openclaw wants to merge 1 commit into
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Adds resolveSystemPromptPreamble() helper that reads a preamble file from the state directory, replacing the hardcoded 'You are a personal assistant running inside OpenClaw.' string. Resolution order: 1. Config agents.defaults.systemPromptPreambleFile for custom filename 2. Default filename: system-prompt-preamble.md 3. Full path: <stateDir>/<filename> 4. File content used if non-empty (trimmed, CRLF normalized) 5. Falls back to hardcoded default if file missing/empty/unreadable Changes: - New: src/agents/system-prompt-preamble.ts (helper + cache) - Modified: src/agents/system-prompt.ts (both promptMode paths) - Modified: src/agents/system-prompt-config.ts (wire config field) - Modified: src/cli/capability-cli.ts (lazy resolution) - Modified: src/config/types.agent-defaults.ts (schema type) - Modified: src/config/zod-schema.agent-defaults.ts (zod schema) - New: src/agents/system-prompt-preamble.test.ts (unit tests) - New: tests/test-cases-system-prompt-preamble.md (29 test cases) Closes #61
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Summary
Adds a file-based override for the system prompt preamble. If
~/.openclaw/system-prompt-preamble.md(or a custom filename via config) exists in the state directory, its contents replace the hardcoded"You are a personal assistant running inside OpenClaw."string.Motivation
The hardcoded preamble contradicts custom agent personas defined in bootstrap context. Every agent operator should be able to define their own identity framing.
Implementation
resolveSystemPromptPreamble()helper insrc/agents/system-prompt-preamble.tsagents.defaults.systemPromptPreambleFilefor custom filenamesystem-prompt-preamble.md<stateDir>/<filename>stablePromptPrefixCachehash for proper cache invalidationChanges
src/agents/system-prompt-preamble.ts— new helper + cache +clearSystemPromptPreambleCache()for testingsrc/agents/system-prompt.ts— bothpromptMode="none"and mainstablePrefixpaths patchedsrc/agents/system-prompt-config.ts— wires config field through to prompt buildersrc/cli/capability-cli.ts— lazy resolution forLOCAL_MODEL_RUN_SYSTEM_PROMPTsrc/config/types.agent-defaults.ts+zod-schema.agent-defaults.ts— schema forsystemPromptPreambleFilesrc/agents/system-prompt-preamble.test.ts— 18 unit tests covering happy path, fallback, edge cases, caching, filename overridetests/test-cases-system-prompt-preamble.md— 29 test case specificationsBackward Compatibility
When no preamble file exists, behavior is identical to current — zero breaking changes.
Upstream PR Candidate
This is a clean, non-breaking enhancement suitable for upstream PR to openclaw/openclaw.
Closes #61
Closes #43