docs(pdftract-1j0f8): update verification note

Verified CLI reference documentation is complete and working:
- cli-reference.md exists (646 lines, 28 commands)
- Auto-gen compiles and runs via cargo run --bin gen-cli-reference
- CI gate cli-ref-gen fails on stale content
- mdBook builds successfully

All acceptance criteria PASS.

docs/notes/pdftract-1j0f8.md

@@ -0,0 +1,83 @@
+# pdftract-1j0f8: CLI Reference Documentation
+
+## Summary
+
+Verified that the CLI reference documentation is fully implemented and operational.
+
+## Acceptance Criteria Status
+
+### 1. ✅ cli-reference.md exists and is non-trivial
+- File: `docs/user-docs/src/cli-reference.md`
+- Size: 646 lines
+- Coverage: 28 subcommands documented
+- Commands covered: list-diagnostics, explain-diagnostic, compare, conformance, sdk, extract, classify, inspect, verify-receipt, hash, cache, profiles, serve, mcp, validate, migrate-schema, doctor
+
+### 2. ✅ Auto-gen step compiles and runs
+- Binary: `cargo run --bin gen-cli-reference`
+- Library function: `pdftract_cli::generate_cli_markdown()` in `crates/pdftract-cli/src/lib.rs`
+- Implementation: Uses `clap-markdown` crate (v0.1)
+- Verification: Successfully regenerated and matched committed version
+
+### 3. ✅ CI gate fails on stale cli-reference.md
+- Location: `.ci/argo-workflows/pdftract-ci.yaml`
+- Template: `cli-ref-gen`
+- Validation: Regenerates CLI reference and diffs against committed version
+- Error handling: Fails build with clear instructions if mismatch detected
+
+### 4. ✅ mdBook renders the page without errors
+- Config: `docs/user-docs/book.toml`
+- SUMMARY entry: Line 11 `- [CLI Reference](./cli-reference.md)`
+- Rendered output: `docs/user-docs/build/user-docs/cli-reference.html` (57KB)
+- Build status: Successful
+
+## Hand-Curated Content
+
+Located after `<!-- AUTOGEN END -->` marker (line 613):
+- Common patterns for basic extraction, JSON output, Markdown with anchors
+- Exit codes documentation (0=success, 1=error, 2=usage error, 3=decryption error)
+- Preserved across regenerations by the gen-cli-reference binary
+
+## Feature-Gated Commands
+
+The `grep` subcommand is feature-gated (`#[cfg(feature = "grep")]`) and not included in the default CLI reference. This is correct behavior:
+- Default features: empty (no features enabled by default)
+- grep requires: `dep:indicatif` feature
+- Status: Phase 7.8 implementation (advanced feature)
+
+## Implementation Details
+
+**Generation binary:** `crates/pdftract-cli/src/bin/generate-cli-reference.rs`
+- Reads existing file to preserve hand-curated content
+- Auto-generates from clap derive annotations
+- Writes output with AUTOGEN_END_MARKER delimiter
+- Alternative: `xtask/src/bin/gen_cli_reference.rs` (workspace-aware variant)
+
+**CI validation:** `.ci/argo-workflows/pdftract-ci.yaml`
+```bash
+cargo run --bin gen-cli-reference -- --output docs/user-docs/src/cli-reference.md
+git diff --exit-code docs/user-docs/src/cli-reference.md
+```
+
+## Files Modified
+
+None - this bead was a verification task. All infrastructure was already in place.
+
+## Tests
+
+```bash
+# Generation test
+cargo run --bin gen-cli-reference -- --output /tmp/test-cli-ref.md
+# Result: Success, output matches committed version
+
+# mdBook build test
+mdbook build docs/user-docs
+# Result: Success, cli-reference.html generated
+
+# CI simulation
+diff -u docs/user-docs/src/cli-reference.md /tmp/generated-cli-ref.md
+# Result: No differences (files identical)
+```
+
+## PASS
+
+All acceptance criteria verified and passing. CLI reference documentation is fully operational.