Adds the system prompt for the survey reconnaissance pass. The survey
agent answers three questions (what is this, what approach, which tools
matter) from cheap signals — file type distribution and a top-2-level
tree — without reading files. Tool triage is tri-state: relevant, skip,
or unlisted (default), so skip is reserved for tools whose use would be
actively wrong rather than merely unnecessary.
Wiring of _run_survey() and the submit_survey tool follows in #5.
Add confidence and confidence_reason to both cache schemas in the dir
loop prompt. Add a Confidence section with categorical guidance
(high ≥ 0.8, medium 0.5–0.8, low < 0.5) and the rule to include
confidence_reason when confidence is below 0.7.
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
Moves _DIR_SYSTEM_PROMPT and _SYNTHESIS_SYSTEM_PROMPT from ai.py into
a dedicated prompts module. Both are pure template strings with .format()
placeholders — no runtime imports needed in prompts.py. Prompt content
is byte-for-byte identical to the original.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
