chore: Prepare module for PowerShell Gallery publishing

- RepoHerd.psd1: real GUID, enriched description, 13 tags for
  discoverability, LicenseUri, ReleaseNotes for v9.0.0
- README.md: added Install-Module section under Installation
- docs/drafts/reddit-hn-posts.md: draft posts for r/PowerShell,
  r/devops, and Show HN

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

Author: AndreaV-Lsi

README.md

@@ -160,6 +160,14 @@ RepoHerd resolves recursive dependencies across repository trees, supports both
 
 ## Installation
 
+### From PowerShell Gallery (recommended)
+
+```powershell
+Install-Module -Name RepoHerd
+```
+
+### Manual download
+
 1. Download `RepoHerd.ps1`, `RepoHerd.psm1`, and `RepoHerd.psd1` to the same directory
 2. Create `dependencies.json` with your repository configuration
 3. Create `git_credentials.json` with your SSH key mappings (if using SSH repositories)

RepoHerd.psd1

@@ -2,11 +2,11 @@
     # Module manifest for RepoHerd
     RootModule        = 'RepoHerd.psm1'
     ModuleVersion     = '9.0.0'
-    GUID              = 'a1b2c3d4-e5f6-7890-abcd-ef1234567890'
+    GUID              = '55dbb622-24f8-4f70-b16e-5412d436f94f'
     Author            = 'LS Instruments AG'
     CompanyName       = 'LS Instruments AG'
     Copyright         = '(c) LS Instruments AG. All rights reserved.'
-    Description       = 'PowerShell-based dependency management tool that checks out multiple Git repositories to specified versions.'
+    Description       = 'Multi-repository Git dependency manager with SemVer version resolution, recursive dependency discovery, and cross-platform SSH support. Clone and checkout multiple Git repositories to pinned versions from a single JSON config. An alternative to git submodules for managing shared libraries across repos.'
     PowerShellVersion = '7.6'
 
     FunctionsToExport = @(
@@ -56,8 +56,10 @@
 
     PrivateData = @{
         PSData = @{
-            Tags       = @('Git', 'Dependency', 'SemVer', 'Checkout')
-            ProjectUri = 'https://github.com/LS-Instruments/RepoHerd'
+            Tags         = @('Git', 'Dependency', 'SemVer', 'Checkout', 'MultiRepo', 'DevOps', 'Automation', 'SSH', 'CrossPlatform', 'DependencyManagement', 'VersionPinning', 'Repository', 'Submodules')
+            LicenseUri   = 'https://github.com/LS-Instruments/RepoHerd/blob/main/LICENSE'
+            ProjectUri   = 'https://github.com/LS-Instruments/RepoHerd'
+            ReleaseNotes = 'v9.0.0: Project renamed from LsiGitCheckout to RepoHerd. Breaking: module, entry point, and initialization function renamed. Added GitHub Pages landing page with SEO.'
         }
     }
 }

docs/drafts/reddit-hn-posts.md

@@ -0,0 +1,74 @@
+# Draft Posts for Reddit and Hacker News
+
+These are starting points for you to edit. Adjust tone, add personal anecdotes, remove what doesn't fit.
+
+---
+
+## r/PowerShell
+
+**Title:** I built RepoHerd — a PowerShell tool for managing multi-repo Git dependencies with SemVer resolution
+
+**Body:**
+
+At work we manage a handful of shared libraries across multiple Git repositories. We used to manually check out the right tags before each build, which was error-prone and tedious — especially when repos had their own nested dependencies.
+
+I built RepoHerd to solve this. You define your dependencies in a JSON file with version constraints, and it clones/checks out everything to the right versions automatically.
+
+What it does:
+
+- **SemVer version resolution** with floating versions (`2.1.*`, `3.*`) — picks the latest compatible tag
+- **Recursive dependency discovery** — walks nested `dependencies.json` files across repos, detects conflicts
+- **Cross-platform SSH** — PuTTY/Pageant on Windows, OpenSSH on macOS/Linux, configured per-host via a credentials file
+- **Structured JSON output** for CI/CD integration (`-OutputFile result.json`)
+- **Post-checkout scripts** — run PowerShell scripts after successful checkouts
+- **Dry run mode** — preview everything before executing
+
+It's written in PowerShell 7.6 LTS, BSD-3-Clause licensed, and has 65 unit + 18 integration tests.
+
+GitHub: https://github.com/LS-Instruments/RepoHerd
+
+Happy to answer questions or hear feedback.
+
+---
+
+## r/devops
+
+**Title:** RepoHerd — open-source alternative to git submodules for multi-repo dependency management (PowerShell, cross-platform)
+
+**Body:**
+
+We hit the limits of git submodules managing shared libraries across ~10 repositories. Detached HEAD pain, no version resolution, submodule-of-submodule nightmares. Monorepo wasn't an option for us.
+
+So I built RepoHerd — a PowerShell-based tool that reads a JSON config and clones/checks out repos to pinned versions with proper dependency resolution.
+
+Why it might be useful:
+
+- **SemVer-aware**: define version constraints like `"2.1.*"` and it picks the latest compatible tag from the remote
+- **Recursive**: repos can have their own `dependencies.json` — RepoHerd walks the tree, detects version conflicts across the graph
+- **CI/CD friendly**: `-OutputFile result.json` gives structured JSON with per-repo status, dependency chains, errors. `-DryRun` for previewing
+- **Cross-platform SSH**: PuTTY on Windows, OpenSSH on macOS/Linux — credentials in a separate file, not baked into the config
+- **Post-checkout hooks**: run scripts after checkout for additional build steps
+
+It's not trying to replace a full build system — it just handles the "get these repos at these versions" step reliably.
+
+PowerShell 7.6 LTS, BSD-3-Clause, 83 automated tests.
+
+GitHub: https://github.com/LS-Instruments/RepoHerd
+
+---
+
+## Show HN
+
+**Title:** Show HN: RepoHerd – Multi-repo Git dependency manager with SemVer resolution
+
+**Body (HN text field):**
+
+RepoHerd is a cross-platform PowerShell tool that clones and checks out multiple Git repositories to pinned versions from a single JSON config.
+
+It solves the problem of managing shared libraries across multiple repos without git submodules. You define version constraints (exact or floating like "2.1.*"), and it resolves the dependency graph recursively, detecting conflicts.
+
+Features: SemVer floating versions, recursive dependency discovery, cross-platform SSH (PuTTY on Windows, OpenSSH on macOS/Linux), structured JSON output for CI/CD, post-checkout scripts.
+
+PowerShell 7.6 LTS, BSD-3-Clause. 65 unit tests + 18 integration tests.
+
+https://github.com/LS-Instruments/RepoHerd