docs(phase-07): complete phase execution
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NikitolProject
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---
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gsd_state_version: 1.0
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milestone: v1.0
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milestone_name: Directory Support
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status: unknown
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last_updated: "2026-02-26T18:32:22.936Z"
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progress:
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total_phases: 7
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completed_phases: 7
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total_plans: 11
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completed_plans: 11
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---
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# Project State
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## Project Reference
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87
.planning/phases/07-format-spec-update/07-VERIFICATION.md
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87
.planning/phases/07-format-spec-update/07-VERIFICATION.md
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---
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phase: 07-format-spec-update
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verified: 2026-02-26T18:31:02Z
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status: passed
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score: 6/6 must-haves verified
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re_verification: false
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---
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# Phase 7: Format Spec Update Verification Report
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**Phase Goal:** FORMAT.md fully documents the v1.1 TOC entry layout with entry type, permission bits, and relative path semantics -- all three decoders can build against it
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**Verified:** 2026-02-26T18:31:02Z
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**Status:** passed
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**Re-verification:** No -- initial verification
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## Goal Achievement
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### Observable Truths
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| # | Truth | Status | Evidence |
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|---|-------|--------|----------|
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| 1 | FORMAT.md defines entry_type field (1 byte, u8) in File Table Entry: 0x00=file, 0x01=directory | VERIFIED | Line 150: `entry_type` field defined as 1 byte u8 in Entry Field Table. Lines 162-167: Entry Type Values table with 0x00=File, 0x01=Directory. 13 total occurrences of `entry_type` across the document. |
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| 2 | FORMAT.md defines permissions field (2 bytes, u16 LE) in File Table Entry with POSIX mode_t lower 12 bits | VERIFIED | Line 151: `permissions` field defined as 2 bytes u16 LE. Lines 169-178: Permission Bits Layout table with all 12 POSIX mode_t bits (setuid, setgid, sticky, owner, group, other). Line 180: examples 0o755=0x01ED, 0o644=0x01A4, 0o700=0x01C0. 17 total occurrences. |
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| 3 | FORMAT.md specifies entry names are relative paths using / separator (e.g. dir/subdir/file.txt) | VERIFIED | Line 66: Notation Conventions updated with relative path semantics. Lines 182-189: Entry Name Semantics subsection with rules (no leading `/`, no `..`, parent-before-child ordering). Line 149: `name` field description references relative paths. |
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| 4 | FORMAT.md worked example includes a directory archive with nested directory, file inside it, and empty directory | VERIFIED | Lines 513-906: Complete worked example with 3 entries -- project/src (directory), project/src/main.rs (file), project/empty (empty directory). Includes input structure table, per-entry pipeline walkthrough, archive layout table with verified offsets, hex tables for all 3 TOC entries and data block, annotated hex dump, and shell decode walkthrough. All offsets verified computationally (427 bytes total). |
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| 5 | FORMAT.md version field is bumped to 2 reflecting the v1.1 format changes | VERIFIED | Line 3: document version "1.1". Line 118: header version field description says `Value 2 for this specification (v1.1)`. Line 437: decode order says `Read version (must be 2 for v1.1)`. Lines 490-497: Version Compatibility section documents v2 changes. Line 651: worked example shows version=2 in hex. |
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| 6 | Entry size formula is updated to include entry_type (1 byte) and permissions (2 bytes) | VERIFIED | Lines 196-198: formula `entry_size = 104 + name_length bytes` with full breakdown showing all fields including entry_type (1) and permissions (2). Lines 204-206: TOC size formula uses 104. Line 494: Version Compatibility documents change from 101 to 104. No stale `101` references in normative sections. |
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**Score:** 6/6 truths verified
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### Required Artifacts
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| Artifact | Expected | Status | Details |
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|----------|----------|--------|---------|
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| `docs/FORMAT.md` | Complete v1.1 binary format specification | VERIFIED | 1127 lines. Contains entry_type (u8) at line 150, permissions (u16 LE) at line 151, Entry Type Values table at line 162, Permission Bits Layout at line 169, Entry Name Semantics at line 182, entry_size=104+name_length at line 197, worked example with 3 entries at lines 513-906. Pattern `entry_type.*u8` found. |
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### Key Link Verification
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| From | To | Via | Status | Details |
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|------|----|-----|--------|---------|
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| Section 5 (TOC Entry Definition) | Section 12 (Worked Example) | entry_type and permissions fields appear in both definition and hex tables | WIRED | entry_type defined in field table (line 150) and appears in all three worked example hex tables (lines 665, 685, 705). permissions defined (line 151) and appears in hex tables (lines 666, 686, 706). |
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| Section 5 (Entry Size Formula) | Section 12 (Archive Layout) | Formula 104+name_length used in offset calculations | WIRED | Formula at line 197; Entry size verifications at lines 677, 697, 717 all use `2 + name_length + 1 + 2 + 4 + ... = 104 + name_length`. Offset arithmetic verified computationally: all 8 offset assertions pass. |
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| Section 5 (Entry Name Semantics) | Section 12 (Shell Decode Walkthrough) | Relative paths used in mkdir -p commands | WIRED | Semantics at lines 182-189; shell walkthrough uses `mkdir -p "output/project/src"` (line 819) and `mkdir -p "output/project/empty"` (line 894). chmod applied after mkdir. |
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| Section 10 (Decode Order) | Section 5 (Entry Type Values) | Decode step 5a checks entry_type and handles directories | WIRED | Decode step 5a (lines 452-454) checks entry_type 0x01, creates directory, applies permissions, skips to next entry. Section 6 (line 220) also notes directory entries have no data block. |
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| Section 11 (Version Compatibility) | Section 4 (Header) | Version 2 documented in compatibility and header field | WIRED | Header version field (line 118) says `Value 2`. Compatibility section (lines 490-497) enumerates all v2 changes including entry_type, permissions, formula change, file_count->entry_count rename, relative paths. |
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### Requirements Coverage
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| Requirement | Source Plan | Description | Status | Evidence |
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|-------------|------------|-------------|--------|----------|
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| FMT-09 | 07-01-PLAN | Entry type in TOC entry (file/directory) -- 1 byte | SATISFIED | `entry_type` field (1 byte, u8) defined at line 150 with values 0x00=file, 0x01=directory (lines 162-167) |
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| FMT-10 | 07-01-PLAN | Unix permission bits (mode) in TOC entry -- 2 bytes (u16) | SATISFIED | `permissions` field (2 bytes, u16 LE) defined at line 151 with POSIX mode_t lower 12 bits layout (lines 169-180) |
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| FMT-11 | 07-01-PLAN | Relative paths with `/` separator instead of filename-only | SATISFIED | Notation conventions (line 66), name field description (line 149), and Entry Name Semantics subsection (lines 182-189) all specify relative paths with `/` separator |
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| FMT-12 | 07-01-PLAN | Updated FORMAT.md specification with new fields | SATISFIED | 1127-line document with complete v1.1 specification including all new fields, updated formulas, version bump, updated decode order, new worked example, and version compatibility documentation |
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**Orphaned requirements:** None. REQUIREMENTS.md maps FMT-09, FMT-10, FMT-11, FMT-12 to Phase 7 (lines 164-167). All four are claimed by plan 07-01-PLAN.md and satisfied.
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### Anti-Patterns Found
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| File | Line | Pattern | Severity | Impact |
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|------|------|---------|----------|--------|
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| `docs/FORMAT.md` | 729 | "representative placeholders" | Info | Legitimate -- the worked example uses representative values for HMAC (C1 repeated) and ciphertext (E7 repeated) since actual values depend on gzip implementation. This is documented clearly and expected for a specification. SHA-256 hash IS real and verified. |
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No blockers, no warnings. No TODO/FIXME/HACK/PLACEHOLDER patterns found.
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### Human Verification Required
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### 1. Cross-reference with existing v1.0 decoder code
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**Test:** Check that the existing Rust, Kotlin, and Shell decoders' TOC parsing code can be updated to match the new field table layout (entry_type and permissions inserted after name, before original_size).
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**Expected:** The field order in FORMAT.md Section 5 is compatible with extending the existing parsing code.
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**Why human:** Requires reading existing code in multiple languages and verifying the insertion point is consistent with implementation patterns.
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### 2. Annotated hex dump byte-level audit
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**Test:** Manually trace each byte in the annotated hex dump (Section 12.10) against the field tables in Sections 12.6-12.9 to confirm every byte is accounted for.
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**Expected:** All 427 bytes are annotated, no gaps or overlaps, annotations match field definitions.
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**Why human:** While offset arithmetic was verified computationally, visual verification of the annotated hex dump format (ASCII column, annotation column) requires human reading.
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### Gaps Summary
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No gaps found. All 6 must-have truths are verified with concrete evidence from the codebase. All 4 requirements (FMT-09 through FMT-12) are satisfied. The specification is internally consistent with mathematically verified offsets, a correct SHA-256 hash, and no stale v1.0 references in normative sections. The worked example covers directories (2 entries) and files (1 entry) with complete hex tables and a shell decode walkthrough demonstrating directory handling.
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---
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_Verified: 2026-02-26T18:31:02Z_
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_Verifier: Claude (gsd-verifier)_
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