docs(readme): convert README.adoc -> Markdown README.md

README must be real Markdown to render in GitHub community-health, the GitHub
profile, and external MCP directories (Glama) — AsciiDoc shows as raw markup
there. pandoc asciidoc->GFM, badges fixed to clickable, SPDX header kept as an
HTML comment, duplicate README.adoc removed.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

Author: hyperpolymath

README.adoc

@@ -0,0 +1,106 @@
+<!--
+SPDX-License-Identifier: CC-BY-SA-4.0
+SPDX-FileCopyrightText: 2025-2026 Jonathan D.A. Jewell <j.d.a.jewell@open.ac.uk>
+-->
+
+# Internet Society Transactor
+
+Check, fix, and submit documents across all Internet Society streams:
+IETF, IRTF, IAB, Independent Stream, IANA, and RFC Editor.
+
+## Features
+
+- **Multi-stream support** — Not just IETF. Handles IRTF Research
+  Groups, IAB documents, Independent Stream submissions, IANA registry
+  requests, and RFC Editor workflows.
+
+- **Parse RFC XML v3 and plain text** — Full RFC 7991 XML parser plus
+  winnow-based plain-text parser.
+
+- **Smart fix classification** — Every fix is classified as AutoSafe
+  (zero risk), Recommended (review advised), or ManualOnly (human
+  required).
+
+- **Nickel-powered templates** — Type-checked contracts, per-stream
+  templates, and policy validation via Nickel.
+
+- **State machine tracking** — Full lifecycle tracking with per-stream
+  state machines (IETF: 20+ states, IRTF: 8, IAB: 4, etc.).
+
+- **Desktop GUI** — Gossamer + ReScript TEA architecture with document
+  editor, checker, and fixer views.
+
+- **Pure Rust dependencies** — gix (not git2-rs), reqwest with rustls
+  (not openssl).
+
+## Quick Start
+
+```bash
+# Check a document
+cargo run -p intsoc-cli -- check path/to/draft.xml
+
+# Fix auto-safe issues
+cargo run -p intsoc-cli -- fix --auto-only path/to/draft.xml
+
+# Preview all fixes (dry run)
+cargo run -p intsoc-cli -- fix --dry-run path/to/draft.xml
+
+# Check submission status
+cargo run -p intsoc-cli -- status draft-jewell-http-430-consent-required-00
+
+# Initialize a new draft
+cargo run -p intsoc-cli -- init draft-jewell-new-feature-00 --stream individual
+```
+
+## Architecture
+
+    crates/
+      intsoc-core/      # Domain model, state machines, validation framework
+      intsoc-parser/    # RFC XML v3, plain-text, idnits output parsing
+      intsoc-fixer/     # Fix engine (AutoSafe/Recommended/ManualOnly)
+      intsoc-nickel/    # Nickel template rendering + policy validation
+      intsoc-git/       # Git integration via gix
+      intsoc-api/       # IETF Datatracker + IANA API clients
+      intsoc-cli/       # CLI binary (intsoc check/fix/submit/status/init)
+    gui/
+      src/              # ReScript TEA frontend
+      backend/          # Gossamer desktop backend (Rust)
+      gossamer.conf.json # Gossamer window/app configuration
+    nickel/
+      contracts/        # Type contracts for metadata validation
+      templates/        # Per-stream document templates
+      policies/         # Submission rules per organization
+    haskell/            # Megaparsec parser helpers (Phase 2)
+    src/abi/            # Idris2 ABI definitions (Phase 3)
+    ffi/zig/            # Zig FFI implementation (Phase 3)
+
+## Supported Streams
+
+| Organization | Streams | Key Characteristics |
+|----|----|----|
+| IETF | Individual, WG, Standards Track, Informational, Experimental, BCP, BIS | 20+ lifecycle states, idnits validation |
+| IRTF | Research Group, Individual | 8 states, IRSG review |
+| IAB | Document, Statement | 4 states, IAB review |
+| Independent | Submission (RFC 4846) | 5 states, ISE review |
+| IANA | Registry Request, Parameter Assignment | 6 states, expert review |
+| RFC Editor | Errata, Editorial | Editorial stream |
+
+## Building
+
+```bash
+# Build all crates
+cargo build --workspace
+
+# Run tests
+cargo test --workspace
+
+# Build release
+cargo build --workspace --release
+```
+
+## License
+
+MPL-2.0 (Palimpsest License)
+
+Copyright (c) 2026 Jonathan D.A. Jewell (hyperpolymath)
+\<[j.d.a.jewell@open.ac](j.d.a.jewell@open.ac).uk\>