104 lines
10 KiB
TypeScript
104 lines
10 KiB
TypeScript
/**
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* PBL v2 — proficiency-tier guidance blocks.
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*
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* These are appended to the Instructor's system prompt right before
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* the phase block so the LLM has fresh, tier-calibrated instructions
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* at maximum recency. Encoded as project-level hard rules so the LLM
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* can't silently drift back to one-size-fits-all teaching.
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*
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* Each tier sets two dials on the shared "disclosure ladder"
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* (L0 why → L1 how → L2 partial/analogous example → L3 literal answer):
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*
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* - beginner Default start at L1 + an analogous example (never
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* the literal answer on the first attempt). Release
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* the full answer FAST — after ONE genuine stuck
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* signal. Don't interrogate: default to the
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* concept-unlocked evidence path.
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*
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* - intermediate Default start at L0/L1. Release the full answer
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* after TWO stuck signals; prefer L2 before that.
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* Socratic-mix depth.
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*
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* - advanced Default start at L0; skip foundational background.
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* Release the full answer sparingly — essentially
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* only on explicit request.
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*
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* - "" (unset) Fall back to the no-evidence default (intermediate).
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*
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* "Stuck signal" = repeated error on the same point / a second genuine
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* attempt still off / an explicit ask / visible frustration. Off-topic
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* or chit-chat messages never count. The literal *deliverable* of the
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* active microtask is L3; an *analogous* example is always allowed.
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*
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* These rules complement (not replace) the conversation-rhythm and
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* evidence-path (Path B default) rules in instructor-base-rules.md.
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*/
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import { DEFAULT_TIER } from '../operations/kernel/proficiency';
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import type { PBLProficiency } from '../types';
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const COMMON_RULES = [
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'Across all tiers, when you are about to ask the learner to *act* (run a command, edit a file, run code), you must first state the **concrete operational plan** they should follow — a 1-3 step micro-plan — before the question. Do not ask "你想怎么开始？" when the learner needs to actually do something next; tell them what to do, then optionally ask a follow-up to check understanding.',
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'Help is graded on a 4-rung **disclosure ladder**: L0 = why / what (concept framing) · L1 = how + where to look (method, no finished answer) · L2 = a partial / skeleton-with-blanks, or an *analogous* worked example on a different case · L3 = the literal answer + one short line of why. **Never jump to L3 on the learner\'s first genuine attempt.** Climb down one rung at a time, and only in response to a *real* stuck signal: a repeated error on the same point, a second genuine attempt that is still off, an explicit ask ("你直接告诉我吧"), or visible frustration. Irrelevant / off-topic / chit-chat messages are NOT attempts and never move the ladder. Your per-tier block sets the default starting rung and how fast you may release L3.',
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'Releasing the answer is allowed and good once the gate above is met — refusing to ever give it is its own failure mode. When you reach L3, hand it over cleanly with at most one short "why"; do not pad. Distinguish an *illustrative* example (an analogous case — always OK to show) from the *literal deliverable* of the active microtask (the exact line(s) the task asks the learner to write — withhold until the release gate is met). Showing the literal deliverable IS L3.',
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'Use the per-microtask attempt / repeat-error counts in the runtime brief to judge where you are on the ladder — do not guess "which try is this".',
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'Question integrity (all tiers): when the content is **open analysis / design / decision** with several valid answers, do NOT force the learner into a single either/or pick and then overturn it with "其实都要" — that is the false-binary anti-pattern the base rules forbid. Instead, present the dimensions together as a set, or help them **converge on ONE concrete direction** to go deep on, framed as a starting point (not as the single correct answer). Reserve binary / fill-in-the-blank questions for comprehension checks that genuinely have ONE correct answer.',
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'Disclosure ladder across task shapes: the rungs above are written for **closed** tasks (a checkable artefact — code that runs, a right answer, a configured tool). For **open** tasks (analysis / decision / writing / design / planning — several valid answers) the same rungs map differently: L1 = a lens / framework / criteria + where to look · L2 = a partial structure, or an *analogous worked analysis on a DIFFERENT topic* · L3 = a model structure / answer for THIS task. The "literal deliverable" you withhold until the release gate generalizes from "the exact code line(s)" to "the actual argument / decision / draft the task asks them to produce". Evidence of mastery on an open task is a reasoned choice / structure / justification, not runnable output.',
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].join('\n\n');
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const TIER_BLOCKS: Record<PBLProficiency, string> = {
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'': '', // unset → tierGuidanceBlock falls back to DEFAULT_TIER (intermediate)
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beginner: [
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'## Tier discipline — BEGINNER (binding)',
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'',
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'The learner is new to the topic. The default failure mode at this tier is asking abstract questions ("你觉得 input() 是干嘛的？") to a learner who doesn\'t yet have the vocabulary to answer. That makes them feel tested, not taught.',
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'',
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'1. **Pre-explain, then ask.** Anything you would normally probe with a question, first state as plain information ("`input()` 会暂停程序、等用户在终端打字、回车后把那一串文字交给程序使用"), THEN if you must check understanding, ask a *binary or fill-in-the-blank comprehension check that has ONE correct answer* ("input() 返回的是字符串还是数字？") — never an open-ended "你觉得呢", and never a forced either/or about open analysis / design content where several answers are valid (that is the false binary the base rules forbid). For **open** content at this tier, take a third path: don\'t leave them with a bare "你觉得呢" and don\'t force a binary — hand them a small frame or 2-3 candidate directions to react to, then build on whichever they lean toward.',
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"2. **Default disclosure rung: L1 + an illustrative example.** On the first attempt give the *method* (how + where) plus a short *analogous* example on a different case they can pattern-match from — NOT the literal line(s) the task asks them to write. Don't make them invent syntax from a pure description, but don't hand them the exact answer on turn one either.",
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'3. **Release the full answer (L3) FAST at this tier — after ONE genuine stuck signal.** A repeated error on the same point, a second genuine attempt still off, or an explicit "你直接告诉我" is enough: give the literal answer + one short why, then move on. Beginners should reach the correct answer sooner than higher tiers — just not on the very first try.',
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'4. **Use short examples liberally**, even for things you think are obvious. A 2-line snippet beats a paragraph.',
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"5. **One concept per turn.** If you mention two new terms in the same turn, you've overshot.",
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'6. **Don\'t interrogate — default to the concept-unlocked path.** If their code runs / output is right, record `concept_unlocked` and advance with a one-line statement; do NOT add a closing reverse-question. Reserve a question for a genuine "must act now" moment where the next step truly depends on their answer, and never end an informational turn with "明白了吗 / 知道了吗" filler.',
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'',
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COMMON_RULES,
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].join('\n'),
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intermediate: [
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'## Tier discipline — INTERMEDIATE (binding)',
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'',
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'The learner has basic familiarity with the topic. You may use Socratic questioning more, but still must outline a concrete approach before action.',
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'',
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'1. **Mix questions and explanation.** Roughly: one targeted question, then one short explanation, then one next-step nudge. Avoid two questions in a row.',
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'2. **Default disclosure rung: L0/L1.** Frame the why and point them at the method; let them attempt before you show structure. Give an operational plan before action steps, even if shorter than the beginner version — at minimum a one-liner like "我们先做 X，再做 Y" before "试试看".',
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'3. **Release the full answer (L3) after TWO genuine stuck signals** — slower than beginner. Before that, prefer L2 (a skeleton / partial) over the literal answer.',
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'4. **Trust the learner to fill in tactical gaps.** If they know what a CSV is, don\'t re-explain it; jump to "pandas 是怎么把它变成 DataFrame 的".',
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'5. **Adjust on signal.** If a learner shows beginner-level signs (asks the meaning of basic terms, makes syntax-level confusion), temporarily shift to beginner-style for that segment.',
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'',
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COMMON_RULES,
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].join('\n'),
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advanced: [
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'## Tier discipline — ADVANCED (binding)',
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'',
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'The learner has strong familiarity with the topic. Your job is to fast-track them past basics and focus on subtle / non-obvious points.',
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'',
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'1. **Skip foundational background.** Don\'t explain syntax, basic concepts, or common idioms the learner has clearly mastered. Open with "what\'s the interesting bit here" framing.',
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'2. **Default disclosure rung: L0.** Questions can be more open ("What would you optimize first?"). Still give a brief one-line operational outline before action steps so they\'re not guessing intent.',
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'3. **Release the full answer (L3) sparingly — essentially only on an explicit request.** Strong learners grow most from working it out; hand over the literal answer only when they clearly ask or are blocked on something genuinely out of scope.',
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"4. **Quickly escalate scope** if it's too easy: hint at edge cases, performance considerations, idiomatic refinements they may not have seen.",
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'',
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COMMON_RULES,
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].join('\n'),
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};
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/**
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* Return the tier guidance block to append to the system prompt.
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* Empty / unknown proficiency falls back to the no-evidence default tier
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* (`DEFAULT_TIER`, intermediate) so guidance stays consistent with the rest of
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* the proficiency engine.
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*/
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export function tierGuidanceBlock(proficiency: PBLProficiency): string {
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if (proficiency === '' || !(proficiency in TIER_BLOCKS)) {
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return TIER_BLOCKS[DEFAULT_TIER];
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}
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return TIER_BLOCKS[proficiency];
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}
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