[Extension]: Update Architecture Workflow to v1.1.0

[bigsmartben]

This updates the already-listed arch extension from v1.0.0 to v1.1.0.

Related prior submission: #2556
Related namespace validation issue: #2570

Spec Kit Extension Submission

Extension ID: arch
Name: Architecture Workflow
Version: 1.1.0
Description: Generate or reverse project-level 4+1 architecture view artifacts and synthesis
Author: bigsmartben
Repository URL: https://github.com/bigsmartben/spec-kit-arch
Download URL: https://github.com/bigsmartben/spec-kit-arch/archive/refs/tags/v1.1.0.zip
Documentation URL: https://github.com/bigsmartben/spec-kit-arch#readme
License: MIT
Required Spec Kit version: >=0.8.10.dev0
Commands count: 2
Hooks count: 0
Tags: architecture, 4plus1, workflow, design

Key features:

• Generates or refreshes six architecture memory artifacts.
• Provides /speckit.arch.reverse for evidence-backed architecture reconstruction from ordinary historical repositories.
• Records reverse workflow evidence in .specify/memory/architecture-repo-facts.md.
• Consumes optional repository-first dependency matrices and module invocation specs as reverse workflow evidence.
• Guides scenario, logical, process, development, physical, and synthesis views.
• Restricts writes to documented .specify/memory/architecture*.md files, including repo facts for reverse generation.

Testing performed:

• Local development install with specify extension add --dev /home/administrator/github/spec-kit-arch using specify 0.8.11.dev0.
• Verified the installed extension lists both speckit.arch.generate and speckit.arch.reverse with Commands: 2.
• Bash setup helper verified with .specify/extensions/arch/scripts/bash/setup-arch.sh --json.
• Release ZIP install verified with specify extension add arch --from https://github.com/bigsmartben/spec-kit-arch/archive/refs/tags/v1.1.0.zip using specify 0.8.11.dev0.
• Verified the release ZIP install writes the expected seven architecture memory files, including .specify/memory/architecture-repo-facts.md.
• Verified release package contents do not include .worktrees/ or tests/.

Note: #2570 tracks an open question about the already-listed arch extension ID and current core namespace validation. This update keeps the existing catalog ID because the current catalog entry already uses arch.

[mnriem]

Thank you!