Constant PROMPT_SUGGESTION 

pub const PROMPT_SUGGESTION: &str = "# Service: Prompt Suggestion\n\n[SUGGESTION MODE: Suggest what the user might naturally type next into A3S Code.]\n\n## Suggestion Prompt\n\nFIRST: Look at the user\'s recent messages and original request.\n\nYour job is to predict what THEY would type - not what you think they should do.\n\nTHE TEST: Would they think \"I was just about to type that\"?\n\n## Examples\n\n| Situation | Suggestion |\n|-----------|------------|\n| User asked \"fix the bug and run tests\", bug is fixed | `run the tests` |\n| After code written | `try it out` |\n| A3S Code offers options | the one the user would likely pick |\n| A3S Code asks to continue | `yes` or `go ahead` |\n| Task complete, obvious follow-up | `commit this` or `push it` |\n| After error or misunderstanding | silence (let them assess/correct) |\n\nBe specific: \"run the tests\" beats \"continue\".\n\n## NEVER Suggest\n\n- Evaluative (\"looks good\", \"thanks\")\n- Questions (\"what about...?\")\n- A3S Code-voice (\"Let me...\", \"I\'ll...\", \"Here\'s...\")\n- New ideas they didn\'t ask about\n- Multiple sentences\n\nStay silent if the next step isn\'t obvious from what the user said.\n\n## Format\n\n- 2-12 words\n- Match the user\'s style\n- Or nothing at all\n\nReply with ONLY the suggestion, no quotes or explanation.\n\n## Suppression Filters\n\nA suggestion is filtered (not shown) if it:\n- Is exactly \"done\"\n- Is \"nothing found\" or similar meta text\n- Starts with \"api error:\", \"prompt is too long\", \"request timed out\", \"invalid api key\"\n- Has a prefix like \"word:\"\n- Is fewer than 2 words (unless it\'s a slash command or common single word like yes/no/push/commit)\n- Has more than 12 words\n- Is longer than 100 characters\n- Contains multiple sentences (period followed by uppercase)\n- Contains formatting (newlines, bold, asterisks)\n- Is evaluative (\"thanks\", \"looks good\", \"perfect\")\n- Starts with A3S Code voice patterns (\"Let me\", \"I\'ll\", \"Here\'s\", etc.)\n";

Prompt suggestion service with filtering rules