ATLAS Report 2026.08.28 — Six of Five

Public ATLAS report on a preservation tool that reported five local checkouts, verdict clean, while a sixth had always existed. The scan searched for a .git directory; in a linked worktree .git is a file, so every worktree on the machine was structurally invisible. Third instance in two days of a discovery predicate narrower than the category it was meant to cover, each failing silently. Caught by a second method run for an unrelated reason. Nothing was stranded.

SOURCE RECORD // READY

Date
ID
FI-LOG-019
Type
atlas-report
Object
ATLAS repository topology / local checkout inventory
System
git worktree layout / filesystem discovery predicate / clone inventory
Condition
blind spot found immediately after merge / no source lost
Status
discovery corrected / classification pending operator
Associated dossier
ATLAS / FI-PROJ-006

SYSTEM OUTPUT // FIELD INSTRUMENT

atlas-report public field report ATLAS repository topology git worktrees discovery predicate verification boundary silent failure failure record operator authority

>STATUS

A CORRECTION MERGED // THE CORRECTED TOOL WAS RUN // IT REPORTED FIVE CHECKOUTS, VERDICT OK. A SIXTH EXISTED AND HAD ALWAYS EXISTED. NO SOURCE LOST // NOTHING STRANDED. LOCAL PATHS, DEVICE ADDRESSES, HOSTNAMES, AND ACCOUNT IDENTIFIERS REMAIN OUTSIDE THE PUBLIC RECORD.

>THE MISSING CHECKOUT

A LINKED WORKTREE ON A REAL BRANCH. CORRECT REMOTE // NOT SHALLOW // DEPTH FOUR AGAINST A LIMIT OF SIX // NOT EXCLUDED BY THE PRUNE LIST. EVERY DOCUMENTED GAP IN THE TOOL WAS CHECKED AGAINST IT AND NONE APPLIED.

>CAUSE

THE SCAN LOCATED REPOSITORIES BY SEARCHING FOR A DIRECTORY NAMED .git. IN A LINKED WORKTREE .git IS NOT A DIRECTORY BUT AN EIGHTY-SEVEN BYTE TEXT FILE POINTING AT THE PARENT OBJECT STORE. THE TEST EXCLUDED FILES, SO EVERY WORKTREE ON THE MACHINE WAS STRUCTURALLY INVISIBLE. NOT MISJUDGED // NEVER SEEN.

>THE THIRD TIME

FIRST A CHECKOUT WAS IDENTIFIED BY ITS ORIGIN URL, WHICH FAILS SILENTLY UNDER A RENAME. SECOND, IDENTITY WAS RE-GROUNDED ON THE ROOT COMMIT AND THE URL KEPT AS ONE ARM. THIRD, THE LAYOUT TEST. IDENTITY WAS FIXED TWICE WHILE THE QUESTION OF WHAT TO TEST FOR IDENTITY WENT UNEXAMINED. EACH TIME THE PREDICATE WAS NARROWER THAN THE CATEGORY // EACH TIME THE FAILURE REPORTED CLEAN.

>THE COUNT WAS NOT THE SURVEY

THE TOOL ENUMERATED A POPULATION, EXAMINED ALL OF IT, AND REPORTED HONESTLY ON WHAT IT EXAMINED. THE ARITHMETIC WAS SOUND TO THE END. THE POPULATION WAS DEFINED BY THE FINDER AND THE FINDER WAS WRONG. A RISK RANKING RUNS THE WRONG WAY HERE // A WORKTREE IS LIKELIER THAN A CLONE TO HOLD UNCOMMITTED WORK, BECAUSE HOLDING IN-PROGRESS WORK IS WHY WORKTREES EXIST.

>WHAT CAUGHT IT

NOT INSIGHT. A SECOND METHOD RUN FOR AN UNRELATED REASON. A PLAIN FILESYSTEM SEARCH, USED EARLIER TO LOCATE THE REPOSITORY ON AN UNFAMILIAR MACHINE, HAD RETURNED SIX PATHS. THE TOOL RETURNED FIVE. THE TOOL WAS NOT DOUBTED BECAUSE ITS LOGIC LOOKED WRONG // IT WAS DOUBTED BECAUSE A DIFFERENT INSTRUMENT HAD ALREADY PRODUCED A DIFFERENT NUMBER. A FINDER CANNOT AUDIT ITS OWN POPULATION.

>WHAT HELD

THE CORRECTED TOOL WAS RUN AGAINST REALITY, NOT ONLY ITS TESTS. THE CONTRADICTION WAS INVESTIGATED RATHER THAN RECONCILED. CAUSE WAS ESTABLISHED BY MEASUREMENT BEFORE ANY FIX, AND WAS NONE OF THE THREE SUSPECTED. THE SUMMARY LINE WAS CORRECTED ALONGSIDE THE FINDER SO SIX CHECKOUTS ARE NOT CALLED SIX CLONES. THE INCOMPLETE STEP WAS DECLARED IN THE COMMIT RATHER THAN LEFT TO BE FOUND AS A BUG.

>STANDARD

FI-LOG-017 HELD THAT A COUNTER IS NOT A COPY. FI-LOG-018 EXTENDED IT TO CHECKS // ZERO OF ZERO IS NOT A PASS. THIS CASE SATISFIED BOTH AND STILL FAILED, SO THE BOUNDARY MOVES FROM HOW MANY WERE EXAMINED TO WHICH WERE ELIGIBLE. A SCAN STATES THE PREDICATE THAT DECIDED WHAT TO LOOK AT // ITS COUNT IS RECONCILED AGAINST A DIFFERENT METHOD, NOT A CAREFUL RE-RUN OF THE SAME ONE // CATEGORIES IT CANNOT SEE ARE NAMED IN ITS OWN OUTPUT OR SOURCE // A PROPERTY IS ASKED OF THE AUTHORITATIVE TOOL RATHER THAN INFERRED FROM SHAPE // A SURPRISING AGREEMENT IS TREATED LIKE A SURPRISING DISAGREEMENT. OTHERWISE THE STATE IS UNSURVEYED, NOT COMPLETE.

>PRESERVATION

THE UNSEEN WORKTREE HELD A CLEAN TREE ON A BRANCH ALREADY MERGED UPSTREAM, SO ITS ABSENCE COST NOTHING ON THIS OCCASION. THAT IS A FACT ABOUT THIS INSTANCE, NOT A MITIGATION OF THE FAULT. BRANCHES LEFT BY THE MERGED CORRECTION WERE CHECKED FOR CONTENT RATHER THAN TRUSTED TO A REFUSAL TO DELETE THEM, SINCE A SQUASH MERGE LEAVES BRANCH COMMITS OUTSIDE THE MAIN LINE BY CONSTRUCTION. WORKTREES WILL BE LISTED AS THEIR OWN ENTRIES RATHER THAN FOLDED INTO A PARENT // LISTING IS INFORMATION-PRESERVING AND FOLDING IS LOSSY. FOLDING REMAINS AVAILABLE LATER // UNFOLDING WHAT WAS NEVER SURFACED DOES NOT.

>ASSESSMENT

THE TOOL WAS NOT BROKEN. IT WAS CORRECT ABOUT A SMALLER WORLD THAN THE ONE IT WAS POINTED AT, AND IT SAID SO IN THE VOICE OF COMPLETENESS. A CRASH INVITES INVESTIGATION // A CONFIDENT, INTERNALLY CONSISTENT REPORT INVITES STOPPING. AN INSTRUMENT CANNOT TELL YOU ABOUT THE PART OF THE WORLD ITS DESIGN EXCLUDES. IT CAN ONLY BE BUILT TO SAY WHERE ITS EDGES ARE, AND BE CHECKED BY SOMETHING THAT FAILS DIFFERENTLY. FIVE WAS ACCURATE. FIVE WAS NOT ALL.

INSPECTABLE SOURCE // CANONICAL

ATLAS // Public Field Report // 2026.08.28

Canonical source: src/data/field-logs.yml

Draft/source note: src/docs/field-logs/atlas-report-2026-08-28-six-of-five.md

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