package main

import (
	"encoding/json"
	"fmt"
	"io"
	"sort"
	"strconv"
	"strings"
	"unicode/utf8"

	"textmachine/backend/internal/pipeline"
	"textmachine/backend/internal/store"
)

// render.go: the human/JSON output renderers of the commands, extracted from main.go into
// pure functions over the pipeline/store structs (package #4). Every output byte is a
// FROZEN contract (stable enums in --json — D12; the human tables are an audit
// surface D20.4): fmt.Printf was replaced with fmt.Fprintf(w, …) with
// w=os.Stdout — byte-for-byte; every deliberate change is listed in
// PROGRESS (one in this package: report carries ch/chunk/model_requested/err —
// the post-mortem of a failed call used to be an "empty string", the pain of a smoke run).
// The ledger callbacks preserve the EXACT order "print → read SpentUSD → print"
// of the original code: hoisting the read above the render would change the partial output on error.

// gapMarker is the IN-TEXT marker for a unit that ships text with a piece MISSING — the c-lite
// member drop, where the editor edited the unit's clean members and left a flagged member's text
// out entirely. Without it the reader gets a seamless concatenation with a chunk-sized hole in it
// and no way to know: the hole has no seam, because the editor rewrote the remainder around it.
//
// WHY IT LIVES IN THE RENDERER and not in the export projection, where the deterministic chapter
// title is applied. The title is part of the BOOK and must reach the platform; this marker is
// metadata ABOUT the text, and the wire decides `translated` vs `withheld` by asking whether the
// unit's text is EMPTY (runevents UnitDone.Shipped ← oc.FinalText != ""). A marker written into
// that text would turn every withheld unit into a translated one and break the very distinction
// the contract promises. So it is applied one layer further out, where nothing but a human reads.
//
// WHY IT IS NOT TARGET-LANGUAGE TEXT. Every banner on this surface is English operator vocabulary
// («leak cleaned, verify», «not translated, flagged for a human»), and this surface is an AUDIT
// concatenation — it interleaves per-unit banners with prose, so it is read by the operator, not
// sold to a reader. Keeping the marker in that same vocabulary makes it pair-independent by
// construction: a target language with no langpack at all gets byte-identical output, and there is
// no per-pair string to forget. A target-language marker would belong to the reader-facing artifact
// the PLATFORM builds, and that is not this file.
//
// ⚠ THE GUARD AT BOTH CALL SITES (FinalText != "") IS LOAD-BEARING. Members are counted whenever they
// drop, INCLUDING when every member of the unit drops — and then the unit ships nothing at all. Saying
// «a fragment is missing from the text below» over an empty body would be a second false statement,
// pointing at text that does not exist; the honest banner there is the one that already existed,
// «not translated, flagged for a human». The marker is for a unit that ships SOME of its text.
// ⚠ THE REASON IS THE DROP'S OWN, never the unit's FlagReason. A unit whose edit flagged for a
// cosmetic sanitizer strip AND also lost a member carries the STRIP as its FlagReason; printing that
// as the cause of the hole tells the reader a clean-up ate a chunk of the book — the same false claim
// the banner used to make, moved into the prose. The banner still shows the unit's verdict; the marker
// shows the hole. They are different facts and are now carried by different fields.
func gapMarker(dropped int, reason string) string {
	frag, verb := "fragment", "is"
	if dropped != 1 {
		frag, verb = "fragments", "are"
	}
	m := fmt.Sprintf("[⚠ TEXT MISSING — %d source %s of this unit could not be translated and %s NOT in the text below",
		dropped, frag, verb)
	if reason != "" {
		m += ": " + reason
	}
	return m + "]"
}

// renderTranslate prints the per-chunk translation report and returns the
// CompletedWithFlags sentinel when chunks were flagged (exit 2).
func renderTranslate(w io.Writer, res *pipeline.BookResult, ledger func() (committed, reserved float64, err error)) error {
	for _, ch := range res.Chunks {
		fmt.Fprintf(w, "=== CHAPTER %d CHUNK %d — %s%s ===\n", ch.Chapter, ch.ChunkIdx, ch.Disposition, flagSuffix(ch.FlagReason))
		switch {
		case ch.Disposition == pipeline.DispOK:
			fmt.Fprintln(w, ch.FinalText)
		case ch.DroppedMembers > 0 && ch.FinalText != "":
			// c-lite member drop: the editor shipped the CLEAN members and left a flagged member's
			// text out. The text below is real and paid for, but it is INCOMPLETE, and saying
			// «leak cleaned» here — which this branch used to do for every flagged-with-text unit,
			// whatever the reason — told the reader the opposite of what happened.
			fmt.Fprintf(w, "[FLAG %s] ↓\n", ch.FlagReason)
			fmt.Fprintln(w, gapMarker(ch.DroppedMembers, string(ch.DroppedReason)))
			fmt.Fprintln(w, ch.FinalText)
		case ch.FlagReason == pipeline.FlagSanitizerStripped && ch.FinalText != "":
			// Cosmetic sanitizer strip (D35.4a): the leak was removed and the remainder exported,
			// but the chunk stays flagged for a human to verify the auto-clean — not lost to an
			// empty placeholder (ch5/ch20 chapter openers used to drop whole for a leading «###»).
			fmt.Fprintf(w, "[FLAG %s — leak cleaned, exported cleaned, verify] ↓\n", ch.FlagReason)
			fmt.Fprintln(w, ch.FinalText)
		case ch.FinalText != "":
			// Flagged, with text, and neither of the two known causes. The engine produces no such
			// unit today; printing a neutral banner keeps an unforeseen one from inheriting either
			// of the specific claims above.
			fmt.Fprintf(w, "[FLAG %s — verify] ↓\n", ch.FlagReason)
			fmt.Fprintln(w, ch.FinalText)
		default:
			fmt.Fprintf(w, "[FLAG %s] chunk not translated — draft/edit unusable, flagged for a human\n", ch.FlagReason)
		}
		for _, st := range ch.Stages {
			how := "call"
			switch {
			case st.Disposition == pipeline.DispSkipped:
				how = "skipped"
			case st.FromResume:
				how = "resume"
			}
			fmt.Fprintf(w, "  %-8s %-22s %-8s %-8s%s $%.6f (cum $%.6f) in=%d (cached=%d) out=%d+%d att=%d %dms finish=%s\n",
				st.Stage, st.Model, how, st.Disposition, flagSuffix(st.FlagReason),
				st.CostUSD, st.CumCostUSD,
				st.Usage.PromptTokens, st.Usage.CachedTokens,
				st.Usage.CompletionTokens, st.Usage.ReasoningTokens, st.Attempts, st.LatencyMS, st.FinishReason)
		}
		fmt.Fprintln(w)
	}

	fmt.Fprintf(w, "TOTAL (this run): $%.6f — chunks %d, flags %d\n", res.TotalUSD, len(res.Chunks), res.Flagged)
	committed, reserved, err := ledger()
	if err != nil {
		return err
	}
	fmt.Fprintf(w, "Book ledger: committed=$%.6f reserved=$%.6f\n", committed, reserved)

	// The stop NAMES its ceiling. A run bounded by --max-units ends with exit 0 like any other completed
	// run, so without this line the operator sees "TOTAL … chunks 3" on a hundred-unit book and has no way
	// to tell "the volume I bought is done" from "something went quietly wrong" — the silent-limit
	// complaint D39.165 §1б took from OpenHands. It names the ceiling, what was delivered as against
	// re-made, and what remains of each kind, so the next action is readable off the line itself.
	if v := res.Volume; v != nil {
		fmt.Fprintf(w, "VOLUME CEILING: %s\n", v)
		fmt.Fprintf(w, "  (this is a COMPLETION, not a pause — the run did what it was granted; the money ceiling is a separate stop with its own exit code.)\n")
		// ⚠ The invitation to buy more is spoken ONLY about units that were never delivered. The first
		// version said "run again to buy more" unconditionally, which on a fully-translated book with a
		// moved bank offered the reader chapters they already own — re-payment presented as stock.
		//
		// Both remainders are reported when both exist. An if/else here would have printed the fresh half
		// and silently dropped the other, leaving an operator who has BOTH kinds pending believing the
		// first number was all of it.
		if v.LeftFresh > 0 {
			fmt.Fprintf(w, "  Next: %d output unit(s) of this book have never been delivered — `--max-units` again to buy them (units, NOT chapters: a chapter can be several units; the manifest is what converts).\n", v.LeftFresh)
		}
		if v.LeftRework > 0 {
			if v.LeftFresh > 0 {
				fmt.Fprintf(w, "  Also pending, and NOT a purchase: %d already-delivered unit(s) carry a superseded snapshot and would be RE-MADE. Buying them delivers no new chapter.\n", v.LeftRework)
			} else {
				fmt.Fprintf(w, "  Next: every unit of this book HAS been delivered; the %d left carry a superseded snapshot and would be RE-MADE, not delivered. That is a re-pass, not a purchase of new book.\n", v.LeftRework)
			}
		}
		if v.Delivered == 0 && v.Reworked > 0 {
			fmt.Fprintf(w, "  ⚠ This run delivered NO new unit: all %d paid unit(s) were re-made under a moved snapshot.\n", v.Reworked)
		}
	}

	// Exit code 2 is a typed sentinel, not an infra error: the report above is
	// already on stdout; main() maps this to a non-zero exit for the operator.
	if res.Flagged > 0 {
		return &pipeline.CompletedWithFlags{Flagged: res.Flagged, Total: len(res.Chunks)}
	}
	return nil
}

// renderSignatureStop prints the operator-facing bank-mining signature-stop banner (R1-FL-A): the run
// paused before the edit wave because the delta holds terms no earlier stop presented (D39.144 flag
// model). It surfaces the term count + the signature-map path + the resume path (decide whatever you
// wish via `tmctl bank-apply`, then re-run — the stop will not re-fire on what it just showed).
// Distinct from a flag/crash — main() maps the sentinel to exit 3.
func renderSignatureStop(w io.Writer, s *pipeline.WaveSignatureStop) {
	// s.Terms is the size of the WHOLE map — new and previously-presented-but-undecided together. Under
	// the flag model the map deliberately mixes the two, so the count must not be labelled «new»
	// (review-workflow finding: run 2 of the flag chain stops with 2 terms of which 1 is new).
	fmt.Fprintf(w, "=== BANK-MINING: STOP FOR SIGNATURE (%d term(s) in the map) ===\n", s.Terms)
	fmt.Fprintf(w, "The run STOPPED before the edit wave: the mined delta holds term(s) no stop has shown you before.\n")
	renderBankStopRows(w, s.Rows)
	fmt.Fprintf(w, "Signature map: %s\n", s.SignaturePath)
	if s.TablePath != "" {
		fmt.Fprintf(w, "Full table:    %s\n", s.TablePath)
	}
	fmt.Fprintln(w, "Next: review the map, decide as much or as little as you wish (`tmctl bank-apply` — one act over the")
	fmt.Fprintln(w, "whole bank, one term, or nothing), then re-run `tmctl translate`. The run will NOT stop again on the")
	fmt.Fprintln(w, "terms above — only on new ones — and whatever you leave undecided still goes to the model, as part of the same\n"+
		"law block as the terms you signed (D39.104: the bank on the wire is law for every row; an unsigned rendering\n"+
		"is used consistently and corrected one level up, by a bank edit and a re-edit).")
	// ⚠ These lines used to name the ⟨проверить⟩ marker, which row 134 removed from the wire (D39.104 п.2). They
	// now describe what actually reaches the model: the same block, no mark. The engine has NOT stopped telling
	// the two apart — `Unsigned bank terms` counts them, the signature map lists them, and the post-check reports
	// them apart — it has stopped telling the MODEL apart, which is what the doctrine changed.
	fmt.Fprintln(w, "To run WITHOUT this pause, drop --verify-bank: the run then carries the unsigned bank forward and uses it.")
}

// bankStopStdoutCap bounds the stdout table. The emission cap is 200 terms (miner.emitRankCap), and 200
// blocks of source contexts is a scroll, not a review surface — the FULL table always lands in the
// sidecar, and the banner says so, so the cap can never read as "that was all of it".
const bankStopStdoutCap = 20

// renderBankStopRows prints the bank verification table D39.36 specified — src · proposed dst · frequency ·
// variant spread · evidence — capped, with the omitted count stated out loud.
func renderBankStopRows(w io.Writer, rows []pipeline.BankStopRow) {
	if len(rows) == 0 {
		return
	}
	// THE ONLY use the confidence is allowed to have (D39.102): the capped stdout view is the REVIEW surface,
	// so it is ordered least-sure-first — an ordinal inside one model's reply and nothing more. It is not a
	// weight, not a threshold, not comparable between models, and it never decides which rendering wins; the
	// full sidecar keeps the source-key order, because that is the reference document.
	shown := append([]pipeline.BankStopRow(nil), rows...)
	sort.SliceStable(shown, func(i, j int) bool { return reviewRank(shown[i]) < reviewRank(shown[j]) })
	if len(shown) > bankStopStdoutCap {
		shown = shown[:bankStopStdoutCap]
	}
	fmt.Fprintln(w, "")
	fmt.Fprintln(w, "  (least-confident first — the role's own ordering of what to read)")
	fmt.Fprintln(w, "  src                  proposed dst              origin    freq  spread  conv  conf")
	for _, r := range shown {
		fmt.Fprintf(w, "  %-20s %-25s %-9s %5d %6d %5d %5s\n", trunc(r.Src, 20), trunc(dashIfEmpty(r.Dst), 25),
			r.Origin, r.Freq, r.Spread, r.Conventions, confCell(r.Conf))
		// WHY this row has this dst — the question the artifacts could not answer before the fix-pack. The
		// signals are the ranking factors that fired for the winning variant; "invented" says the rendering is
		// the role's own, not one the drafts proposed (legitimate — it saw the whole book — and worth a look).
		if len(r.Signals) > 0 || r.Invented {
			why := strings.Join(r.Signals, ", ")
			if r.Invented {
				why = strings.TrimPrefix(why+" · invented (no draft proposed it)", " · ")
			}
			fmt.Fprintf(w, "      why:    %s\n", trunc(why, 90))
		}
		if len(r.Contradicts) > 0 {
			// A contradiction against this run's OWN consolidations: the compound dropped the rendering the
			// same reply gave its part. Loudest line of the row — it is a canon breaking inside one call.
			fmt.Fprintf(w, "      ⚠ contradicts: %s\n", trunc(strings.Join(r.Contradicts, "; "), 80))
		}
		if len(r.BankHolds) > 0 {
			// The other disagreement, and a different decision: the book already renders this surface some
			// other way. It rides the same screen as its sibling above, or the operator's first view of the
			// stop shows one and hides the other.
			fmt.Fprintf(w, "      ⚠ bank holds:  %s\n", trunc(strings.Join(r.BankHolds, "; "), 80))
		}
		if len(r.Variants) > 1 {
			// The disagreement is the reason to sign: one term coming back several ways is exactly what a
			// canon exists to close, and hiding it behind one winner throws that reason away.
			fmt.Fprintf(w, "      drafts: %s\n", trunc(strings.Join(r.VariantLabels(), " | "), 90))
		}
		if len(r.Contexts) > 0 {
			fmt.Fprintf(w, "      ctx:    %s\n", trunc(r.Contexts[0], 90))
		}
	}
	if len(rows) > len(shown) {
		fmt.Fprintf(w, "  … %d more term(s) — the full table is in the sidecar below\n", len(rows)-len(shown))
	}
	fmt.Fprintln(w, "")
}

// reviewRank orders the review surface: rows the role was least sure of first, rows it said nothing about
// after them (silence is not a low score), and rows it never consolidated last.
func reviewRank(r pipeline.BankStopRow) int {
	switch {
	case r.Dst == "":
		return 1000
	case r.Conf < 0:
		return 200
	default:
		return r.Conf
	}
}

// confCell renders the role's stated confidence, or "—" when the reply carried none (a negative). Printing
// a bare 0 for both would hide the single most important row on the sheet — the one the role itself said it
// was least sure of — behind the rows it never mentioned.
func confCell(conf int) string {
	if conf < 0 {
		return "—"
	}
	return strconv.Itoa(conf)
}

// trunc shortens s to n runes with an ellipsis (rune-safe, so a CJK surface is never split mid-character).
func trunc(s string, n int) string {
	rs := []rune(s)
	if len(rs) <= n {
		return s
	}
	if n <= 1 {
		return "…"
	}
	return string(rs[:n-1]) + "…"
}

// flagSuffix renders a non-empty flag reason as "(reason)".
func flagSuffix(r pipeline.FlagReason) string {
	if r == "" {
		return ""
	}
	return "(" + string(r) + ")"
}

// renderReport prints the request_log table, the flag/memory/style sections and
// the ledger line. Deliberate package-#4 change: the ch/chunk columns, the model with
// a fallback to the REQUESTED one (a failed call has an empty model_actual — the row was
// anonymous) and the degraded/err tail — the DB has stored these columns since Milestone 2, the printer
// dropped them, and the post-mortem needed digging into sqlite3.
//
// All three store reads are CALLBACKS, like ledger: the historical report read and
// printed interleaved, and a read failure mid-audit left the already-printed part on stdout;
// hoisting the reads above the render would silently change that partial
// output to empty (a self-review finding — the same principle documented
// below for the ledger line).
func renderReport(w io.Writer,
	fetchRows func() ([]store.RequestLogView, error),
	fetchFlags func() ([]store.ChunkStatus, error),
	fetchStates func() ([]store.RetrievalState, error),
	ledger func() (committed, reserved float64, err error)) error {
	rows, err := fetchRows()
	if err != nil {
		return err
	}
	fmt.Fprintf(w, "%-20s %-4s %-5s %-8s %-12s %-22s %8s %8s %8s %8s %8s %10s %8s %-8s %-5s %-3s %s\n",
		"ts", "ch", "chunk", "stage", "role", "model", "prompt", "cached", "cwrite", "compl", "reason", "cost_usd", "ms", "finish", "tmhit", "ok", "err")
	for _, row := range rows {
		model := row.ModelActual
		if model == "" && row.ModelRequested != "" {
			model = row.ModelRequested + "(req)"
		}
		fmt.Fprintf(w, "%-20s %-4d %-5d %-8s %-12s %-22s %8d %8d %8d %8d %8d %10.6f %8d %-8s %-5d %-3d %s\n",
			row.TS, row.Chapter, row.ChunkIdx, row.Stage, row.Role, model, row.PromptTokens, row.CachedTokens,
			row.CacheCreationTokens, row.CompletionTokens, row.ReasoningTokens, row.CostUSD,
			row.LatencyMS, row.FinishReason, row.TMHit, row.OK, errTail(row.Degraded, row.Err))
	}

	// Estimated-spend legend (pack-13 point-9, research/21 §1.10): rows whose cost_usd is a reservation
	// ESTIMATE (a billed decode failure, or a paid 2xx with zero usage), not a provider-reported cost.
	// Surfacing the share keeps an estimate from looking like a real zero-token call; est_tokens is the
	// display-only fertility output estimate. Prints only when there is at least one such row.
	var estRows, estTokens int
	var estUSD float64
	for _, row := range rows {
		if row.Estimated == 1 {
			estRows++
			estUSD += row.CostUSD
			estTokens += row.EstTokens
		}
	}
	if estRows > 0 {
		fmt.Fprintf(w, "estimated-cost rows: %d ($%.6f settled at the reservation estimate, not provider-reported; ~%d est. output tokens via fertility, display-only)\n", estRows, estUSD, estTokens)
	}

	// Flag section (Milestone 2): every chunk×stage whose disposition ≠ ok — the
	// "flag for the editor" the plan requires (02-mvp Phase-1 acceptance allows N).
	flags, err := fetchFlags()
	if err != nil {
		return err
	}
	headerPrinted := false
	for _, f := range flags {
		if f.Disposition == "ok" {
			continue
		}
		if !headerPrinted {
			fmt.Fprintf(w, "\n=== FLAGS (disposition ≠ ok) ===\n")
			fmt.Fprintf(w, "%-4s %-6s %-8s %-9s %-16s %5s %10s  %s\n",
				"ch", "chunk", "stage", "disp", "reason", "att", "cost_usd", "detail")
			headerPrinted = true
		}
		fmt.Fprintf(w, "%-4d %-6d %-8s %-9s %-16s %5d %10.6f  %s\n",
			f.Chapter, f.ChunkIdx, f.Stage, f.Disposition, f.FlagReason, f.Attempts, f.CostUSD, f.Detail)
	}

	// Memory section (step 4): the per-chunk retrieval-state, surfaced so silent glossary
	// degradation is LOUD. The aggregate line always prints when a glossary is in use;
	// each chunk with a post-check miss is listed with the offending src→dst. Two limits: a
	// chunk is listed on its CONFIRMED miss count while the detail beside it carries every
	// miss including the unsigned ones, so a listed line is not necessarily an approved
	// term; and a miss means the rendering is ABSENT — a wrong dst the model OBEYED is
	// present in the output and appears in no line here (mempostcheck.go).
	states, err := fetchStates()
	if err != nil {
		return err
	}
	if len(states) > 0 {
		var injected, sticky, ambiguous, spoiler, evicted, misses, style int
		for _, rs := range states {
			injected += rs.NExactHits
			sticky += rs.NSticky
			ambiguous += rs.NAmbiguousFlagged
			spoiler += rs.NSpoilerBlocked
			evicted += rs.NEvicted
			misses += rs.NPostcheckMiss
			style += rs.NStyleFlags
		}
		fmt.Fprintf(w, "\n=== MEMORY (retrieval-state) ===\n")
		fmt.Fprintf(w, "injections(exact)=%d sticky=%d ambiguous=%d spoiler-blocked=%d evicted=%d post-check-misses=%d\n",
			injected, sticky, ambiguous, spoiler, evicted, misses)
		printed := false
		for _, rs := range states {
			if rs.NPostcheckMiss == 0 {
				continue
			}
			if !printed {
				fmt.Fprintf(w, "%-4s %-6s %6s  %s\n", "ch", "chunk", "misses", "detail (src→dst not found in output)")
				printed = true
			}
			fmt.Fprintf(w, "%-4d %-6d %6d  %s\n", rs.Chapter, rs.ChunkIdx, rs.NPostcheckMiss, rs.PostcheckDetail)
		}
		// Banknote channel (pack-20 / D39.42 п.4): the draft-side WHAT proposals are counted per chunk in
		// retrieval_state, but until now NO surface printed them — the cold run of 31.07 had to read them
		// out of the DB by hand to answer "did the channel produce anything, and what did the parser
		// reject". Chunk coverage matters as much as the total: 0 lines on most chunks is a channel
		// failure that a healthy grand total can hide. Printed only when the channel produced or rejected
		// something, so a banknote-off book's report stays byte-identical.
		var bankLines, bankChunks, bankParseFail, bankTruncated int
		for _, rs := range states {
			bankLines += rs.NBanknoteLines
			if rs.NBanknoteLines > 0 {
				bankChunks++
			}
			if rs.BanknoteParseFail != 0 {
				bankParseFail++
			}
			if rs.BanknoteTruncated != 0 {
				bankTruncated++
			}
		}
		if bankLines > 0 || bankParseFail > 0 || bankTruncated > 0 {
			fmt.Fprintf(w, "\n=== BANKNOTE (draft-side WHAT channel, observability) === lines=%d over %d/%d chunk(s) · parse-fail chunks=%d · truncated chunks=%d\n",
				bankLines, bankChunks, len(states), bankParseFail, bankTruncated)
		}
		// Cheap style/number flaggers (observability, not gates): total + per-chunk detail.
		fmt.Fprintf(w, "\n=== STYLE GATES (observability: dialogue-dashes, ё, translit-interjections, 万/億 magnitudes, reflow-regression) — total %d ===\n", style)
		stylePrinted := false
		for _, rs := range states {
			if rs.NStyleFlags == 0 {
				continue
			}
			if !stylePrinted {
				fmt.Fprintf(w, "%-4s %-6s %6s  %s\n", "ch", "chunk", "flags", "detail")
				stylePrinted = true
			}
			fmt.Fprintf(w, "%-4d %-6d %6d  %s\n", rs.Chapter, rs.ChunkIdx, rs.NStyleFlags, rs.StyleDetail)
		}
	}

	committed, reserved, err := ledger()
	if err != nil {
		return err
	}
	fmt.Fprintf(w, "\nBook ledger: committed=$%.6f reserved=$%.6f\n", committed, reserved)
	return nil
}

// errTail collapses the degraded/err columns into one bounded table tail (empty
// when the call was clean). Truncation is on a rune boundary: err carries raw chunks
// of provider bodies (CJK/Cyrillic), a byte slice would print broken UTF-8
// (a self-review finding).
func errTail(degraded, errText string) string {
	s := degraded
	if errText != "" {
		if s != "" {
			s += " "
		}
		s += errText
	}
	if len(s) > 120 {
		cut := 120
		for cut > 0 && !utf8.RuneStart(s[cut]) {
			cut--
		}
		s = s[:cut] + "…"
	}
	return s
}

// renderQuality prints the deterministic per-run quality-report (D39 layer 5): the claim-1 structural
// KPI (mean sentences per narrative paragraph) plus the aggregated deterministic signals
// (dialogue-dash, glossary consistency, number drift, CJK-leak / echo rates, trust-gated). Pure
// observability — a summary section, never an exit code. Kept SEPARATE from renderReport so that
// function's frozen callback contract (render_test.go) is untouched.
func renderQuality(w io.Writer, q *pipeline.QualityReport) error {
	fmt.Fprintf(w, "\n=== QUALITY (per-run, deterministic signals — observability, not a gate) ===\n")
	fmt.Fprintf(w, "total units=%d · reached final=%d · with export text=%d\n", q.TotalUnits, q.ProcessedUnits, q.TextUnits)
	// Claim-1: choppy paragraphs. ≈1.0 sentences/paragraph = choppy (the owner's complaint); higher = merged prose.
	fmt.Fprintf(w, "STRUCTURE (claim-1 «choppy paragraphs»): sentences/narrative-paragraph=%.2f (sentences=%d / narrative-paragraphs=%d)\n",
		q.MeanSentPerNarrPara, q.NarrativeSentences, q.NarrativeParagraphs)
	fmt.Fprintf(w, "SIGNALS: dialogue-dash=%d · glossary-misses=%d · number-drift=%d · trust-gated(seed)=%d · degenerate-loops=%d\n",
		q.DialogueDashFlags, q.GlossaryMisses, q.NumberDriftFlags, q.TrustGated, q.DegenerateLoopRuns)
	// Echo split (D39.18): draft = the translator echoed (incl. dropped c-lite members) / edit = the editor
	// echoed in what was delivered. Cosmetic-strip is per unit (the sanitizer runs on the final stage).
	// The recovered share is spelled out rather than hidden: an echo the escalation fixed still measures
	// the translator (the D18 mine is live), but it cost the book nothing beyond the wasted primary call.
	recovered := ""
	if q.EchoDraftRecovered > 0 {
		recovered = fmt.Sprintf(", %d recovered by escalation", q.EchoDraftRecovered)
	}
	fmt.Fprintf(w, "STRIPS/ECHO: cosmetic-strip units=%d (%.1f%%, markdown+CJK) · echo draft=%d (%.1f%%%s) · echo edit=%d (%.1f%%)\n",
		q.CosmeticStripUnits, 100*q.CosmeticStripRate, q.EchoDraftChunks, 100*q.EchoDraftRate, recovered, q.EchoEditUnits, 100*q.EchoEditRate)
	// The UNSIGNED-BANK line (pack-20 / D39.42 п.4): in the auto mode part of the bank the model is shown
	// carries renderings nobody approved, and that has to be visible rather than implied. The follow rate
	// is NOT a quality verdict — the unverified section explicitly grants the model the right to translate
	// otherwise — it is a measurement of the channel. Printed only when there is an unsigned bank at all,
	// so a fully signed book's report is byte-identical to before.
	if q.UnsignedBankTerms > 0 || q.UnverifiedShown > 0 {
		followed := ""
		if q.UnverifiedShown > 0 {
			followed = fmt.Sprintf(" (%.0f%%)", 100*float64(q.UnverifiedFollowed)/float64(q.UnverifiedShown))
		}
		// A ROW count, not a unit count: one unit can carry several, and labelling it a unit count would
		// understate the exposure. "checked", not "shown": the counter increments once per unsigned row whose
		// key FIRED in that unit, and a sticky carry is put in front of the model without being counted —
		// its src is in the previous chunk, so the output is not expected to answer for it
		// (membank.PostcheckResult). The follow percentage is a fraction OF THIS, so calling it a count of
		// showings would have the operator read a ratio other than the one printed.
		fmt.Fprintf(w, "UNSIGNED BANK: terms=%d · rows-checked=%d · model followed=%d%s — proposals, not canon; review the signature map beside the DB and decide via `tmctl bank-apply`\n",
			q.UnsignedBankTerms, q.UnverifiedShown, q.UnverifiedFollowed, followed)
	}
	// The pack-19 flaggers (D39.55). They were aggregated into the report struct from the start but no
	// surface ever PRINTED them, so the only run that had them on could not read its own axes. Counts are
	// meaningless without their denominators (2 flags out of 3 attributed replies is a different fact from
	// 2 out of 300), so the line always carries them. Axis D is reported apart from the A–C total because
	// its addressee comes from a heuristic, and the rule version travels with the numbers (the voice gate
	// is deliberately not snapshot-folded). Spoiler leaks sit here too: the one safety signal of the four.
	// Printed only when the flagger actually ran, so a book without voice content is byte-identical.
	if q.VoiceCheckVersion != "" || q.VoiceFlags > 0 || q.SpoilerLeaks > 0 {
		fmt.Fprintf(w, "VOICE (axes A–C, observability): flags=%d over attributed=%d of replies=%d · axis-D pair-register=%d · spoiler-leaks=%d · rules=%s\n",
			q.VoiceFlags, q.VoiceAttributed, q.VoiceReplies, q.VoicePairRegister, q.SpoilerLeaks, dashIfEmpty(q.VoiceCheckVersion))
	}
	// Addressable-defect RESIDUAL (pack-16): how many defects a repair loop could actually attack in what
	// this run shipped — the $0 measurement that decides whether enabling the paid loop is worth it. The
	// line is printed only when something fired, so a clean book's report is unchanged.
	// Money-side label provenance: hop COUNT (the per-unit boolean cannot count them) and the per-model
	// spend split. Printed only when there is something to say, so a clean report is unchanged.
	// WHAT THE MONEY BOUGHT. The total has always been printed; this is the SPLIT, and it leads with the
	// part that did not become text because that is the number an operator can act on. Every word is
	// literally true of the rows it sums: «superseded» means a later paid call for the same position
	// replaced this one — not «wasted», which would be a verdict this report has no standing to reach.
	if t := q.PaidTail; t != nil {
		fmt.Fprintf(w, "MONEY BY WHAT IT BOUGHT: shipped text $%.6f (%d call(s)) · the book's TERMINOLOGY $%.6f (%d) · superseded-by-a-later-call $%.6f (%d) · bought-nothing-shippable $%.6f (%d) — total $%.6f\n",
			t.ShippedUSD, t.ShippedCalls, t.BankUSD, t.BankCalls,
			t.SupersededUSD, t.SupersededCalls, t.WithheldUSD, t.WithheldCalls, t.TotalUSD)
		if lost := t.LostUSD(); lost > 0 {
			pct := 0.0
			if t.TotalUSD > 0 {
				pct = 100 * lost / t.TotalUSD
			}
			// ⚠ «Bought nothing» and NOT «did not become shipped text»: the bank roles buy the book's
			// terminology and never a chunk of its text, so the older wording called a glossary pass that
			// worked perfectly a total loss — the false-cause defect this section was built to remove,
			// committed by the section itself (found by the acceptance).
			fmt.Fprintf(w, "  ⚠ $%.6f of that (%.1f%%) bought NOTHING — neither text nor terminology", lost, pct)
			if t.WorstPosition != "" {
				fmt.Fprintf(w, "; the largest single loss is %s at $%.6f", t.WorstPosition, t.WorstUSD)
			}
			fmt.Fprintln(w)
		}
	}
	if q.EscalationHops > 0 || len(q.SpendByModel) > 0 || len(q.ContentLabels) > 0 {
		parts := make([]string, 0, len(q.SpendByModel))
		for _, m := range sortedFloatKeys(q.SpendByModel) {
			parts = append(parts, fmt.Sprintf("%s=$%.6f", m, q.SpendByModel[m]))
		}
		line := fmt.Sprintf("ROUTING/MONEY: escalation hops=%d · spend by model: %s", q.EscalationHops, strings.Join(parts, " · "))
		if len(q.ContentLabels) > 0 {
			line += fmt.Sprintf(" · labels=%s · routing=%s", strings.Join(q.ContentLabels, ","), strings.Join(q.Routing, " · "))
		}
		fmt.Fprintln(w, line)
	}
	if q.RepairCandidates > 0 {
		parts := make([]string, 0, len(q.RepairCandidatesByClass))
		for _, cls := range sortedKeys(q.RepairCandidatesByClass) {
			parts = append(parts, fmt.Sprintf("%s=%d", cls, q.RepairCandidatesByClass[cls]))
		}
		fmt.Fprintf(w, "REPAIR RESIDUAL: addressable defects=%d (%s) — deterministic candidates in the shipped text\n",
			q.RepairCandidates, strings.Join(parts, " · "))
	}
	if q.RepairCalls > 0 {
		fmt.Fprintf(w, "REPAIR LOOP: calls=%d · applied=%d · declined=%d (our flag was wrong) · rejected=%d (guard/re-gate refused)\n",
			q.RepairCalls, q.RepairApplied, q.RepairDeclined, q.RepairRejected)
	}
	return nil
}

// sortedKeys renders a map's keys in a stable order (a report must not depend on map iteration).
// sortedFloatKeys is sortedKeys for a money map — one helper per value type keeps the render
// deterministic without reaching for generics (least mechanism; both maps are tiny).
func sortedFloatKeys(m map[string]float64) []string {
	out := make([]string, 0, len(m))
	for k := range m {
		out = append(out, k)
	}
	sort.Strings(out)
	return out
}

func sortedKeys(m map[string]int) []string {
	out := make([]string, 0, len(m))
	for k := range m {
		out = append(out, k)
	}
	sort.Strings(out)
	return out
}

// renderExport prints the read-only export projection (D39 layer 6 / D39.2-open №1): every chunk's
// FINAL export text EXACTLY as `tmctl translate` ships it (export-normalised), for the polygon
// extractor / reader-samples to read the same bytes the backend does instead of the raw checkpoint.
// The DEFAULT is stable JSON (the machine surface the extractor consumes); --plaintext emits the human
// concatenation (a per-chunk header banner + the text, flagged chunks marked). Pure $0 read — never an
// exit-2 sentinel (unlike translate/status): export is an audit projection, not a run verdict.
func renderExport(w io.Writer, exp *pipeline.BookExport, asPlaintext bool) error {
	if asPlaintext {
		// Manifest/drift summary first (F3/F4): a partial or drifted book is EXPLICIT, not silently
		// exported as complete.
		// The header counts WITHHELD units separately. It used to fold them into `exported`
		// (exported = total − pending), so a book that shipped nothing for two units still
		// announced them as exported — the same lie as the mislabelled banner below, told in
		// numbers: a reader who trusts the summary never learns to look.
		// The predicate is pipeline.UnitHole — ONE definition shared with the book writer, so the
		// numbers this header prints and the holes `tmctl build` marks can never disagree.
		withheld, incomplete := pipeline.HoleCounts(exp)
		// `incomplete` is a SUBSET of `exported`, not a fourth part of the total: those units DID ship
		// text, with a piece of it missing. Spelled that way so a reader adding the numbers up is not
		// misled into thinking they partition the book.
		fmt.Fprintf(w, "# export %s — total units=%d, exported=%d (of them incomplete=%d), withheld=%d, pending=%d",
			exp.BookID, exp.TotalUnits, exp.TotalUnits-exp.PendingUnits-withheld, incomplete, withheld, exp.PendingUnits)
		if exp.GhostRows > 0 {
			fmt.Fprintf(w, ", ghost-rows-dropped=%d", exp.GhostRows)
		}
		if exp.ConfigDrift {
			fmt.Fprintf(w, " ⚠ CONFIG-DRIFT (the current config renders a different snapshot — a gate/stage may have changed since the run; %.12s)", exp.CurrentSnapshot)
		}
		fmt.Fprintln(w)
		for _, ce := range exp.Chunks {
			switch {
			case ce.Disposition == "pending":
				fmt.Fprintf(w, "=== CHAPTER %d CHUNK %d — pending (not yet translated) ===\n", ce.Chapter, ce.ChunkIdx)
			case ce.Disposition == string(pipeline.DispOK):
				fmt.Fprintf(w, "=== CHAPTER %d CHUNK %d ===\n", ce.Chapter, ce.ChunkIdx)
			case ce.DroppedMembers > 0 && ce.FinalText != "":
				// c-lite member drop: real text, but a member chunk's worth of it is MISSING. The
				// banner says so and the marker repeats it INSIDE the text stream, because a reader
				// scrolling prose passes the banner once and the hole has no seam of its own.
				fmt.Fprintf(w, "=== CHAPTER %d CHUNK %d — %s%s (INCOMPLETE) ===\n",
					ce.Chapter, ce.ChunkIdx, ce.Disposition, flagParen(ce.FlagReason))
				fmt.Fprintln(w, gapMarker(ce.DroppedMembers, ce.DroppedReason))
			case ce.FlagReason == string(pipeline.FlagSanitizerStripped) && ce.FinalText != "":
				// Cosmetic sanitizer strip (D35.4a): auto-cleaned remainder, flagged for a human.
				fmt.Fprintf(w, "=== CHAPTER %d CHUNK %d — %s%s (leak cleaned, verify) ===\n",
					ce.Chapter, ce.ChunkIdx, ce.Disposition, flagParen(ce.FlagReason))
			case ce.FinalText != "":
				// Flagged, with text, neither known cause — a neutral banner rather than an
				// inherited claim (see renderTranslate for the same reasoning).
				fmt.Fprintf(w, "=== CHAPTER %d CHUNK %d — %s%s (verify) ===\n",
					ce.Chapter, ce.ChunkIdx, ce.Disposition, flagParen(ce.FlagReason))
			default:
				// Substantive flag / upstream skip: no export text (D2 — contaminated output never ships).
				fmt.Fprintf(w, "=== CHAPTER %d CHUNK %d — %s%s (not translated, flagged for a human) ===\n",
					ce.Chapter, ce.ChunkIdx, ce.Disposition, flagParen(ce.FlagReason))
			}
			fmt.Fprintln(w, ce.FinalText)
		}
		return nil
	}
	enc := json.NewEncoder(w)
	enc.SetIndent("", "  ")
	return enc.Encode(exp)
}

// flagParen renders a non-empty flag reason as " (reason)" for the plaintext export banner.
func flagParen(r string) string {
	if r == "" {
		return ""
	}
	return " (" + r + ")"
}

// renderBuild prints the build report as indented JSON: the versioned envelope every JSON output of the
// engine carries (17-seam-inbound-law п.3), and the surface the platform's export door will read the
// file paths from. JSON only: the consumer is a caller that opens the files, and the human reads paths
// out of JSON as well as out of prose.
func renderBuild(w io.Writer, rep *pipeline.BuildReport) error {
	enc := json.NewEncoder(w)
	enc.SetIndent("", "  ")
	return enc.Encode(rep)
}

// renderManifest prints the persisted chapter/chunk manifest (row 100). The default is a human summary —
// a 2283-chapter tree is not something anyone reads in a terminal — and --json emits the document itself,
// byte-identical to the sidecar, so a consumer can pipe it instead of knowing where the file lives.
func renderManifest(w io.Writer, m *pipeline.BookManifest, path string, asJSON bool) error {
	if asJSON {
		enc := json.NewEncoder(w)
		enc.SetIndent("", "  ")
		return enc.Encode(m)
	}
	fmt.Fprintf(w, "=== MANIFEST: %s ===\n", m.BookID)
	fmt.Fprintf(w, "chapters=%d units=%d chunks=%d\n", m.ChaptersTotal, m.UnitsTotal, m.ChunksTotal)
	fmt.Fprintf(w, "source: %d bytes (sha256 %.12s) · encoding %s · %s→%s\n",
		m.SourceBytes, m.SourceSHA256, m.Encoding, m.SourceLang, m.TargetLang)
	fmt.Fprintf(w, "cut by: %s · validity key %.12s\n", m.ChunkerVersion, m.Key)
	// WHERE the chapter boundaries came from, in the human view too: an operator deciding whether to
	// offer an order «through chapter N» has to know whether N names something the file said or something
	// this engine inferred from prose (BookManifest.Structure).
	if m.Structure != "" {
		fmt.Fprintf(w, "chapter structure: %s\n", m.Structure)
	}
	// The a-priori price. `step_max_usd` is on the same line as the total on purpose: it is the number a
	// ceiling has to clear before the run can move AT ALL, and an operator reading only the total would
	// set a ceiling that admits nothing.
	if p := m.Price; p != nil {
		// ⚠ THE BOOK-LEVEL PART IS NAMED A CEILING, NOT A FORECAST, and on a short book that is the whole
		// of the honesty: the terminology passes are bounded by their configured budgets and their input
		// does not exist until the drafts do, so the figure is what the engine will NOT exceed. On a book
		// of a few chapters it can dominate the total — an operator reading «expected cost» as a bill
		// would think a short book dearer than a long one per chapter, which is backwards (acceptance F3).
		fmt.Fprintf(w, "expected cost: $%.6f for the whole book (%d source chars)\n", p.ExpectedUSD, p.SourceChars)
		if p.BookOnceUSD > 0 {
			fmt.Fprintf(w, "  …of which $%.6f is the book-level CEILING of the terminology passes — a bound the run will not exceed, not a forecast; it is charged once per book, so it weighs most on a short one\n", p.BookOnceUSD)
		}
		fmt.Fprintf(w, "smallest workable ceiling: $%.6f — the largest single reservation; under it NOTHING is admitted\n", p.StepMaxUSD)
	}
	fmt.Fprintf(w, "written: %s\n", path)
	return nil
}

// renderStatusJSON emits the StatusReport as indented JSON (stable enums — the
// ratified CI/IDE contract, D12/D15.3) and maps flagged>0 to the exit-2 sentinel.
func renderStatusJSON(w io.Writer, rep *pipeline.StatusReport) error {
	enc := json.NewEncoder(w)
	enc.SetIndent("", "  ")
	if err := enc.Encode(rep); err != nil {
		return err
	}
	// Symmetric with the human mode (minor 1d): flagged>0 is exit 2 (completed-with-flags), not
	// exit 0. The full JSON is already on stdout; the sentinel only sets the shell disposition
	// (its message goes to stderr in main), so a CI/IDE consumer both parses the projection AND
	// sees "attention needed" in the exit code instead of silently reading 0.
	if rep.Flagged > 0 {
		return &pipeline.CompletedWithFlags{Flagged: rep.Flagged, Total: rep.TotalUnits}
	}
	return nil
}

// renderStatusHuman prints the operator dashboard (unit counts, per-chapter
// passports, money, secondary ETA) and maps flagged>0 to the exit-2 sentinel.
// cfgPath goes into the "what to do" hints (redrive/translate command lines).
func renderStatusHuman(w io.Writer, rep *pipeline.StatusReport, cfgPath string) error {
	snap := rep.Snapshot
	if snap == "" {
		snap = "—"
	} else if len(snap) > 12 {
		snap = snap[:12]
	}
	drift := ""
	if rep.SnapshotDrift {
		drift += " ⚠ SNAPSHOT-DRIFT (several snapshots in chunk_status — the config changed; --resnapshot)"
	}
	if rep.ConfigDrift {
		// ⛔ THIS LINE NO LONGER ASSERTS THE MONEY, and that is the point. It used to end «translate will
		// require --resnapshot = re-paying for the book», which is a claim about SPEND made by a flag that
		// never computed any. The two come apart the moment status learned to see a DROPPED stage:
		// projectRebill deliberately skips rows whose stage the current pipeline does not run («a stage the
		// current pipeline does not run is never re-billed»), so that drift is real and its re-payment is
		// genuinely zero — and the old sentence would have invented a cost. The drift line now says what
		// drifted; the RE-PAYMENT lines below say what it costs, from the projection that actually ran.
		drift += " ⚠ CONFIG-DRIFT (the current config renders a different snapshot than the stored rows — an edit since the run; translate needs --resnapshot to proceed)"
	}
	// The basis behind the boolean: `false` means two different things and only one of them is an answer.
	if rep.ConfigDriftBasis == pipeline.DriftBasisUnknown {
		drift += " ⚠ CONFIG-DRIFT UNKNOWN (the check could not run — the flag above is false because nothing was established, NOT because the config matches; see the log)"
	}
	// The drift flags say THAT the config moved; this says what continuing would COST (spec D15.2 §9).
	// It is the same projection `translate` refuses on, so the operator reads the decision number here
	// instead of discovering it in a refusal.
	if rep.RebillUnits > 0 {
		// BOTH denominations, always, and labelled. The chunk×stage count is what the money is billed in;
		// the output-unit count is what a purchase is sized in. Printing only the first is how a reader
		// hands `--max-units` a number several times too large.
		// And the figure's BASIS, in the consent gate's own words (RebillFigureBasis): what the number is
		// made of, that it errs upward, and how much of it is priced across a model move or carried at last
		// season's money. A figure printed without it invites the reader to take an estimate for a quote.
		drift += fmt.Sprintf(" ⚠ RE-PAYMENT: %d chunk×stage unit(s) already billed under a superseded snapshot would be paid for again — that is %d OUTPUT unit(s) of the book, the granularity --max-units counts in — ~$%.6f (%s; translate needs --accept-rebill above the book's consent threshold). ⚠ Sizing --max-units from that number does NOT buy those units back: a grant goes to NEVER-DELIVERED units first and only reaches re-making when none are left, so on a book that still has undelivered units it will deliver new ones instead",
			rep.RebillUnits, rep.RebillOutputUnits, rep.RebillUSD, rep.RebillFigureBasis())
	}
	// Drift with nothing to re-pay is a real and non-obvious state — a stage dropped from the config puts
	// every book in it — and leaving the operator to infer it from the ABSENCE of a re-payment line is how
	// «no line» gets read as «no drift consequence».
	if rep.ConfigDrift && rep.RebillUnits == 0 && rep.RebillBasis != pipeline.RebillBasisFailed {
		drift += " ⚠ …and NOTHING already billed is re-paid by it: the drift is in rows the current config no longer runs, so a re-run buys those units anew rather than re-buying them"
	}
	// A zero is not self-explanatory, and printing it as though it were is the mistake the `rebill_basis`
	// field exists to stop: "nothing to re-pay" and "we could not work out what a re-pass would cost" are
	// the same two zeroes. Only the two states that are NOT an answer speak here — a computed figure needs
	// no caveat, and a book with nothing stored has nothing to say about re-payment at all.
	switch rep.RebillBasis {
	case pipeline.RebillBasisFailed:
		drift += " ⚠ RE-PAYMENT UNKNOWN (the projection failed — the figures below are zero because they could not be computed, NOT because continuing is free; see the log)"
	case pipeline.RebillBasisStored:
		drift += " ⚠ RE-PAYMENT FIGURES ARE STALE (the book's bank could not be folded, so they describe the glossary the LAST run stored, not what the next run would build — fix the bank and re-read; see the log)"
	}
	fmt.Fprintf(w, "=== STATUS: %s (snapshot %s)%s ===\n", rep.BookID, snap, drift)
	fmt.Fprintf(w, "Progress: %d/%d units (%.1f%%) — done=%d in_progress=%d flagged=%d pending=%d\n",
		rep.Done, rep.TotalUnits, rep.PercentDone, rep.Done, rep.InProgress, rep.Flagged, rep.Pending)
	// Per-wave progress (row 99). The line above needs BOTH waves to have resolved a unit ok, and the edit
	// wave does not start before the bank stop — so it sits at 0/N for the whole draft wave and says nothing
	// about the drafting that IS happening. This line is the split; "resolved" there includes flagged units
	// (see PhaseProgress), which is why it can exceed the done count above.
	fmt.Fprintf(w, "Phases (units resolved by wave): draft %s · edit %s\n",
		waveCell(rep.Progress.Draft), waveCell(rep.Progress.Edit))
	fmt.Fprintf(w, "Escalations: %d · post-check misses (confirmed): %d · style-flags (observability): %d\n",
		rep.Escalations, rep.PostcheckMisses, rep.StyleFlags)
	// Printed only when the bank actually holds unsigned rows, so a book translating entirely against signed
	// canon keeps its exact prior bytes.
	if rep.UnsignedBankTerms > 0 {
		fmt.Fprintf(w, "Unsigned bank terms: %d — the engine's own proposals, used on the wire like any other bank row and not marked apart for the model; review the signature map beside the DB and decide via `tmctl bank-apply`\n", rep.UnsignedBankTerms)
	}
	ceil := ""
	if rep.BookCeilingUSD > 0 {
		ceil = fmt.Sprintf(" (ceiling $%.2f — %.1f%%)", rep.BookCeilingUSD, rep.CeilingPct)
	}
	fmt.Fprintf(w, "Money: committed=$%.6f reserved=$%.6f%s · book forecast ~$%.6f\n",
		rep.CommittedUSD, rep.ReservedUSD, ceil, rep.ProjectedBookUSD)
	if rep.ETASeconds > 0 {
		fmt.Fprintf(w, "ETA: ~%.0fs (mean throughput of fresh calls, NOT EWMA — D12-deviation; secondary)\n", rep.ETASeconds)
	}
	// Content-label provenance (B6): printed only for a labelled book, so an ordinary run's output is
	// unchanged. It answers "which endpoint received this book" — the routing decision, not a hash input.
	if len(rep.ContentLabels) > 0 {
		fmt.Fprintf(w, "CONTENT LABELS: %s · routing: %s\n", strings.Join(rep.ContentLabels, ", "), strings.Join(rep.Routing, " · "))
		for _, p := range rep.ContentRoutingProblems {
			fmt.Fprintf(w, "  ⚠ ROUTING NOT RUNNABLE: %s\n", p)
		}
	}

	if len(rep.Chapters) > 0 {
		// style = cheap deterministic style/number flags (observability, not a disposition) — a per-
		// chapter glance count so a human sees where the linters fired without opening `report` (D20.4).
		fmt.Fprintf(w, "\n%-5s %-9s %-10s %-6s %-4s %-6s %-16s %10s\n", "ch", "done/all", "verdict", "flag", "esc", "style", "worst_flag", "cost_usd")
		for _, p := range rep.Chapters {
			fmt.Fprintf(w, "%-5d %d/%-7d %-10s %-6d %-4d %-6d %-16s %10.6f\n",
				p.Chapter, p.UnitsDone, p.UnitsTotal, p.Verdict, p.UnitsFlagged, p.Escalations, p.StyleFlags,
				dashIfEmpty(p.WorstFlagReason), p.CostUSD)
		}
	}
	// flagged≠failed (jobs.status.failed = infra-only, D12): flagged chunks are a "clean run,
	// attention needed" signal. Two kinds need DIFFERENT actions (minor 1d): a chunk_status flag
	// (soft_refusal, length, …) is re-drivable with `tmctl redrive`; a gate-promoted glossary_miss
	// is NOT (redrive is a no-op — the miss re-derives from the unchanged glossary), so it needs a
	// seed fix + `translate --resnapshot`. Advise each set separately instead of one blanket hint.
	if rep.Flagged > 0 {
		if redrivable := rep.Flagged - rep.GlossaryMissFlagged; redrivable > 0 {
			fmt.Fprintf(w, "\n%d flagged chunk(s) need attention — re-attack: tmctl redrive --config %s [--chapter N --chunk M --reason R]\n",
				redrivable, cfgPath)
		}
		if rep.GlossaryMissFlagged > 0 {
			fmt.Fprintf(w, "\n%d chunk(s) flagged by the post-check gate (glossary_miss) — redrive is a no-op for them: fix the seed glossary (term/dst) and re-run `tmctl translate --config %s --resnapshot` (re-pays the affected chunks)\n",
				rep.GlossaryMissFlagged, cfgPath)
		}
		return &pipeline.CompletedWithFlags{Flagged: rep.Flagged, Total: rep.TotalUnits}
	}
	return nil
}

// waveCell renders one wave counter, or "—" for a wave this pipeline does not have (a draft-only
// pipeline has no edit wave, and printing "0/0" for it would read as work that never starts).
func waveCell(c pipeline.WaveCounter) string {
	if c.Total == 0 {
		return "—"
	}
	return fmt.Sprintf("%d/%d", c.Done, c.Total)
}

// dashIfEmpty renders "" as "—" for a table cell.
// dashIfEmpty renders an empty (or blank) cell as an em dash. ONE definition: pack-20 briefly added a
// second, near-identical `dash` 400 lines above, and the two disagreed on whitespace — the kind of split
// where two tables in the same report start describing the same missing value differently.
func dashIfEmpty(s string) string {
	if strings.TrimSpace(s) == "" {
		return "—"
	}
	return s
}

// renderRedrive prints the redrive plan and (after a live re-run) the re-run
// totals. ledger may return an error — it is DELIBERATELY swallowed without the ledger
// line (original behaviour: flaky reads must not change the redrive exit code).
func renderRedrive(w io.Writer, bookID string, summary *pipeline.RedriveSummary, res *pipeline.BookResult, ledger func() (committed, reserved float64, err error)) error {
	fmt.Fprintf(w, "=== REDRIVE: %s ===\n", bookID)
	if len(summary.Targets) == 0 {
		fmt.Fprintln(w, "No flagged chunks match the selector — nothing to re-attack.")
		return nil
	}
	fmt.Fprintf(w, "Targets: %d flagged chunk(s) — reset the terminal flag + a fresh retry/escalation budget (DispOK untouched):\n", len(summary.Targets))
	for _, t := range summary.Targets {
		fmt.Fprintf(w, "  ch%d/chunk%d (%s) → stages: %s\n", t.Chapter, t.ChunkIdx, t.FlagReason, strings.Join(t.Stages, ", "))
	}
	if summary.DryRun {
		fmt.Fprintln(w, "[dry-run: nothing reset, no calls made]")
		return nil
	}
	fmt.Fprintln(w, "[reset; re-running the durable loop — DispOK chunks resume at $0, reset ones re-attack]")
	fmt.Fprintln(w)

	if res != nil {
		fmt.Fprintf(w, "TOTAL re-run (this run): $%.6f — chunks %d, flags %d\n", res.TotalUSD, len(res.Chunks), res.Flagged)
		committed, reserved, serr := ledger()
		if serr == nil {
			fmt.Fprintf(w, "Book ledger: committed=$%.6f reserved=$%.6f\n", committed, reserved)
		}
		if res.Flagged > 0 {
			return &pipeline.CompletedWithFlags{Flagged: res.Flagged, Total: len(res.Chunks)}
		}
	}
	return nil
}