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@ -1283,6 +1283,22 @@ Deep sessions: 3 → 5 ↑2
**If no prior retros exist:** Skip the comparison section and append: "First retro recorded — run again next week to see trends."
**Recommendation follow-through.** If the most recent prior snapshot has a `recommendations` array (snapshots written before this field existed won't — if it's absent, skip this block silently), check whether this window acted on each one. For every prior recommendation, scan this window's commit subjects (Step 1 git log), changed files, and the metrics you just computed for evidence it was addressed. Classify each as:
- `addressed` — clear evidence in commits/files/metrics (cite it),
- `partial` — some movement but not done,
- `open` — no evidence this window.
Surface a **Recommendation follow-through** section and feed the verdict into the narrative:
```
Recommendation follow-through (vs last retro):
[x] testing — E2E fixture reliability pass addressed: 4 commits under test/fixtures/, flake ratio 1/4 → 0/12
[~] security — gitleaks on a schedule partial: pre-commit hook added, no scheduled run yet
[ ] architecture — extract html_generator open
2 of 3 prior recommendations addressed.
```
When recommendations were acted on, say so explicitly in the narrative ("2 of 3 prior recommendations addressed") instead of attributing the same work to a generic metric like "fix ratio is high." This is the whole point of persisting recommendations: a week spent on retro feedback should read as follow-through, not noise.
### Step 13: Save Retro History
After computing all metrics (including streak) and loading any prior history for comparison, save a JSON snapshot:
@ -1332,6 +1348,11 @@ Use the Write tool to save the JSON file with this schema:
"version_range": ["1.16.0.0", "1.16.1.0"],
"streak_days": 47,
"tweetable": "Week of Mar 1: 47 commits (3 contributors), 3.2k LOC, 38% tests, 12 PRs, peak: 10pm",
"recommendations": [
{ "category": "testing", "text": "E2E fixture reliability pass — the auth setup flakes ~1 run in 4" },
{ "category": "security", "text": "Run gitleaks on a schedule, not just pre-commit" },
{ "category": "architecture", "text": "Extract html_generator rendering into per-format modules" }
],
"greptile": {
"fixes": 3,
"fps": 1,
@ -1343,6 +1364,8 @@ Use the Write tool to save the JSON file with this schema:
**Note:** Only include the `greptile` field if `~/.gstack/greptile-history.md` exists and has entries within the time window. Only include the `backlog` field if `TODOS.md` exists. Only include the `test_health` field if test files were found (command 10 returns > 0). If any has no data, omit the field entirely.
**Always include the `recommendations` array.** Populate it with the exact 3 items you write in the "3 Things to Improve" narrative section (Step 14), one object per item. Each object has a one-word lowercase `category` (e.g. `testing`, `security`, `architecture`, `process`, `docs`, `performance`) and a `text` field carrying the actionable suggestion verbatim. This is what the *next* retro reads back in Step 12 to measure follow-through, so write `text` so it can be matched against future commit subjects and changed files — name the concrete artifact (a file, a script, a check), not a vague aspiration. If you genuinely have fewer than 3 improvements, record what you have; never pad with filler just to reach 3.
Include test health data in the JSON when test files exist:
```json
"test_health": {
@ -1479,6 +1502,8 @@ Identify the 3 highest-impact things shipped in the window across the whole team
### 3 Things to Improve
Specific, actionable, anchored in actual commits. Mix personal and team-level suggestions. Phrase as "to get even better, the team could..."
Record these exact 3 items into the `recommendations` array of the Step 13 snapshot (one object each, with a one-word `category`). They are not just prose for this run — next week's retro reads them back in Step 12 to measure follow-through, so keep each one concrete enough to match against future commits and changed files.
### 3 Habits for Next Week
Small, practical, realistic. Each must be something that takes <5 minutes to adopt. At least one should be team-oriented (e.g., "review each other's PRs same-day").

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@ -431,6 +431,22 @@ Deep sessions: 3 → 5 ↑2
**If no prior retros exist:** Skip the comparison section and append: "First retro recorded — run again next week to see trends."
**Recommendation follow-through.** If the most recent prior snapshot has a `recommendations` array (snapshots written before this field existed won't — if it's absent, skip this block silently), check whether this window acted on each one. For every prior recommendation, scan this window's commit subjects (Step 1 git log), changed files, and the metrics you just computed for evidence it was addressed. Classify each as:
- `addressed` — clear evidence in commits/files/metrics (cite it),
- `partial` — some movement but not done,
- `open` — no evidence this window.
Surface a **Recommendation follow-through** section and feed the verdict into the narrative:
```
Recommendation follow-through (vs last retro):
[x] testing — E2E fixture reliability pass addressed: 4 commits under test/fixtures/, flake ratio 1/4 → 0/12
[~] security — gitleaks on a schedule partial: pre-commit hook added, no scheduled run yet
[ ] architecture — extract html_generator open
2 of 3 prior recommendations addressed.
```
When recommendations were acted on, say so explicitly in the narrative ("2 of 3 prior recommendations addressed") instead of attributing the same work to a generic metric like "fix ratio is high." This is the whole point of persisting recommendations: a week spent on retro feedback should read as follow-through, not noise.
### Step 13: Save Retro History
After computing all metrics (including streak) and loading any prior history for comparison, save a JSON snapshot:
@ -480,6 +496,11 @@ Use the Write tool to save the JSON file with this schema:
"version_range": ["1.16.0.0", "1.16.1.0"],
"streak_days": 47,
"tweetable": "Week of Mar 1: 47 commits (3 contributors), 3.2k LOC, 38% tests, 12 PRs, peak: 10pm",
"recommendations": [
{ "category": "testing", "text": "E2E fixture reliability pass — the auth setup flakes ~1 run in 4" },
{ "category": "security", "text": "Run gitleaks on a schedule, not just pre-commit" },
{ "category": "architecture", "text": "Extract html_generator rendering into per-format modules" }
],
"greptile": {
"fixes": 3,
"fps": 1,
@ -491,6 +512,8 @@ Use the Write tool to save the JSON file with this schema:
**Note:** Only include the `greptile` field if `~/.gstack/greptile-history.md` exists and has entries within the time window. Only include the `backlog` field if `TODOS.md` exists. Only include the `test_health` field if test files were found (command 10 returns > 0). If any has no data, omit the field entirely.
**Always include the `recommendations` array.** Populate it with the exact 3 items you write in the "3 Things to Improve" narrative section (Step 14), one object per item. Each object has a one-word lowercase `category` (e.g. `testing`, `security`, `architecture`, `process`, `docs`, `performance`) and a `text` field carrying the actionable suggestion verbatim. This is what the *next* retro reads back in Step 12 to measure follow-through, so write `text` so it can be matched against future commit subjects and changed files — name the concrete artifact (a file, a script, a check), not a vague aspiration. If you genuinely have fewer than 3 improvements, record what you have; never pad with filler just to reach 3.
Include test health data in the JSON when test files exist:
```json
"test_health": {
@ -627,6 +650,8 @@ Identify the 3 highest-impact things shipped in the window across the whole team
### 3 Things to Improve
Specific, actionable, anchored in actual commits. Mix personal and team-level suggestions. Phrase as "to get even better, the team could..."
Record these exact 3 items into the `recommendations` array of the Step 13 snapshot (one object each, with a one-word `category`). They are not just prose for this run — next week's retro reads them back in Step 12 to measure follow-through, so keep each one concrete enough to match against future commits and changed files.
### 3 Habits for Next Week
Small, practical, realistic. Each must be something that takes <5 minutes to adopt. At least one should be team-oriented (e.g., "review each other's PRs same-day").

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@ -0,0 +1,108 @@
/**
* Regression tests for #1834 /retro generated "3 Things to Improve" as
* throwaway prose and never persisted them, so the next run had no structured
* record of what it recommended and could not detect follow-through. A week
* spent acting on retro feedback got mischaracterized as a generic metric swing.
*
* The fix lives in retro/SKILL.md.tmpl:
* - Step 13 snapshot schema gains a `recommendations` array (always written).
* - Step 13 prose mandates populating it from the "3 Things to Improve" items.
* - Step 12 reads a prior snapshot's `recommendations` back and classifies each
* as addressed / partial / open, with a backward-compat skip for older
* snapshots that predate the field.
* - The "3 Things to Improve" narrative is wired to the persisted array.
*
* These are static invariants against the template body (and the regenerated
* SKILL.md). They fail the build if any leg of the persist read-back loop is
* dropped, so the follow-through capability can't silently regress.
*/
import { describe, expect, test } from "bun:test";
import * as fs from "node:fs";
import * as path from "node:path";
const ROOT = path.resolve(import.meta.dir, "..");
const RETRO_TMPL = path.join(ROOT, "retro", "SKILL.md.tmpl");
const RETRO_MD = path.join(ROOT, "retro", "SKILL.md");
function readTmpl(): string {
return fs.readFileSync(RETRO_TMPL, "utf-8");
}
function readMd(): string {
return fs.readFileSync(RETRO_MD, "utf-8");
}
describe("#1834 retro recommendations — Step 13 snapshot persists them", () => {
test("schema block carries a recommendations array with category + text shape", () => {
const body = readTmpl();
const schemaStart = body.indexOf("Use the Write tool to save the JSON file with this schema:");
expect(schemaStart).toBeGreaterThan(-1);
// The recommendations array must live inside the Step 13 JSON schema, not
// somewhere else in the doc.
const schema = body.slice(schemaStart, schemaStart + 2000);
expect(schema).toMatch(/"recommendations"\s*:\s*\[/);
expect(schema).toMatch(/"category"\s*:/);
expect(schema).toMatch(/"text"\s*:/);
});
test("recommendations are mandatory, not optional like greptile/backlog/test_health", () => {
const body = readTmpl();
expect(body).toMatch(/\*\*Always include the `recommendations` array\.\*\*/);
});
test("Step 13 ties the array to the 3 Things to Improve items", () => {
const body = readTmpl();
const anchor = body.indexOf("**Always include the `recommendations` array.**");
expect(anchor).toBeGreaterThan(-1);
const para = body.slice(anchor, anchor + 700);
expect(para).toMatch(/3 Things to Improve/);
expect(para).toMatch(/follow-through/i);
});
});
describe("#1834 retro recommendations — Step 12 reads them back and scores follow-through", () => {
test("Step 12 has a Recommendation follow-through block before Step 13", () => {
const body = readTmpl();
const follow = body.indexOf("**Recommendation follow-through.**");
const step13 = body.indexOf("### Step 13: Save Retro History");
expect(follow).toBeGreaterThan(-1);
expect(step13).toBeGreaterThan(-1);
expect(follow).toBeLessThan(step13);
});
test("follow-through classifies each prior recommendation addressed/partial/open", () => {
const body = readTmpl();
const follow = body.indexOf("**Recommendation follow-through.**");
const block = body.slice(follow, follow + 1400);
expect(block).toMatch(/`addressed`/);
expect(block).toMatch(/`partial`/);
expect(block).toMatch(/`open`/);
});
test("follow-through is backward compatible with snapshots that predate the field", () => {
const body = readTmpl();
const follow = body.indexOf("**Recommendation follow-through.**");
const block = body.slice(follow, follow + 600);
// Older snapshots have no recommendations array — the block must skip, not crash.
expect(block).toMatch(/if it's absent, skip this block/i);
});
});
describe("#1834 retro recommendations — 3 Things to Improve narrative persists the loop", () => {
test("narrative instructs recording the 3 items into the snapshot array", () => {
const body = readTmpl();
const heading = body.indexOf("### 3 Things to Improve");
expect(heading).toBeGreaterThan(-1);
const section = body.slice(heading, heading + 900);
expect(section).toMatch(/recommendations` array/);
});
});
describe("#1834 retro recommendations — regenerated SKILL.md carries the loop", () => {
test("generated SKILL.md is not stale relative to the template", () => {
const md = readMd();
expect(md).toMatch(/\*\*Always include the `recommendations` array\.\*\*/);
expect(md).toMatch(/\*\*Recommendation follow-through\.\*\*/);
expect(md).toMatch(/"recommendations"\s*:\s*\[/);
});
});