chore: rename solidhaus → kammer

- Update flake outputs: solidhaus-image → kammer-image
- Update registry references: registry.toph.so/solidhaus → registry.toph.so/kammer
- Update workflow to build and push kammer image
- Update package names and metadata

Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>

.forgejo/workflows/build-image.yml

@@ -16,30 +16,42 @@ jobs:
 
       - name: Build OCI image
         run: |
-          nix build .#solidhaus-image \
+          # Try with cache first, fall back to building from source
+          nix build .#kammer-image \
             --print-build-logs \
-            --show-trace
+            --show-trace || {
+              echo "Build failed, retrying with --no-substitute to build from source..."
+              nix build .#kammer-image \
+                --print-build-logs \
+                --show-trace \
+                --option substitute false
+            }
 
       - name: Push to registry
         if: github.ref == 'refs/heads/main'
         run: |
-          image=$(nix build --no-link --print-out-paths .#solidhaus-image)
+          # Ensure temp directory exists for skopeo
+          mkdir -p /var/tmp /tmp
+
+          image=$(nix build --no-link --print-out-paths .#kammer-image)
           skopeo copy \
             --dest-tls-verify=false \
+            --tmpdir /tmp \
             "docker-archive:$image" \
-            "docker://registry.toph.so/solidhaus:latest"
+            "docker://registry.toph.so/kammer:latest"
 
           # Also tag with commit SHA
           skopeo copy \
             --dest-tls-verify=false \
+            --tmpdir /tmp \
             "docker-archive:$image" \
-            "docker://registry.toph.so/solidhaus:${GITHUB_SHA:0:7}"
+            "docker://registry.toph.so/kammer:${GITHUB_SHA:0:7}"
 
       - name: Build summary
         if: github.ref == 'refs/heads/main'
         run: |
           echo "### ✅ Image Built and Pushed" >> $GITHUB_STEP_SUMMARY
           echo "" >> $GITHUB_STEP_SUMMARY
-          echo "- **Image**: registry.toph.so/solidhaus:latest" >> $GITHUB_STEP_SUMMARY
+          echo "- **Image**: registry.toph.so/kammer:latest" >> $GITHUB_STEP_SUMMARY
           echo "- **Tag**: ${GITHUB_SHA:0:7}" >> $GITHUB_STEP_SUMMARY
           echo "- **Commit**: ${GITHUB_SHA}" >> $GITHUB_STEP_SUMMARY

features/item-uid-generation.feature

@@ -0,0 +1,156 @@
+Feature: Item UID Generation - Short Collision-Resistant IDs
+  As a user creating a new item
+  I want to see a pre-generated short UID (7 characters)
+  So that IDs remain compact, memorable, and shareable while avoiding collisions
+
+  Background:
+    Given I am on the "New Item" form
+
+  Rule: UIDs are pre-generated on form load
+
+    Scenario: UID is pre-generated when form loads
+      When the form loads
+      Then I should see a "UID" field
+      And the UID field should contain a 7-character ID
+      And the UID should use only characters from "23456789abcdefghjkmnpqrstuvwxyz"
+      And the UID should be displayed prominently near the top of the form
+
+    Scenario: UID field is read-only with regenerate option
+      When the form loads
+      Then the UID field should be read-only or disabled for manual editing
+      And I should see a "Regenerate" button/icon next to the UID field
+      And the regenerate control should be clearly clickable
+
+  Rule: Users can regenerate UIDs before submission
+
+    Scenario: User regenerates UID once
+      Given the form has loaded with UID "qe3saa3"
+      When I click the "Regenerate" button
+      Then a new 7-character UID should be generated
+      And the new UID should be different from "qe3saa3"
+      And the new UID should be displayed in the UID field immediately
+
+    Scenario: User regenerates UID multiple times
+      Given the form has loaded with UID "qe3saa3"
+      When I click the "Regenerate" button
+      And the new UID is "n4p7m2k"
+      And I click the "Regenerate" button again
+      Then another new 7-character UID should be generated
+      And each generated UID should be unique
+      And the latest UID should replace the previous one
+
+    Scenario: Regenerated UID is used on submission
+      Given the form has loaded with UID "qe3saa3"
+      And I fill in "Name" with "Cable Drum"
+      When I click the "Regenerate" button
+      And the new UID is "n4p7m2k"
+      And I submit the form
+      Then the item should be created with shortId "n4p7m2k"
+      And the barcode URI should be "https://haus.toph.so/n4p7m2k"
+      And the original UID "qe3saa3" should NOT be used
+
+  Rule: UID format and collision resistance
+
+    Scenario: UID uses safe alphabet
+      When a UID is generated
+      Then it should use alphabet "23456789abcdefghjkmnpqrstuvwxyz"
+      And it should exclude confusing characters (0, 1, i, l, o)
+      And it should be exactly 7 characters long
+      And all characters should be lowercase
+
+    Scenario: Collision probability is negligible
+      Given the alphabet has 29 characters (excluding 0, 1, i, l, o)
+      And the UID length is 7 characters
+      Then the total possible IDs should be 29^7 = 17,249,876,309
+      And collision probability for 1,000 items should be approximately 0.000003%
+      And collision probability for 10,000 items should be approximately 0.0003%
+      And collision probability for 100,000 items should be approximately 0.03%
+
+    Scenario Outline: UID examples are valid
+      When a UID "<uid>" is generated
+      Then it should match the pattern "^[23456789a-hjkmnp-z]{7}$"
+      And it should NOT contain any of "0 1 i l o"
+
+      Examples:
+        | uid     |
+        | qe3saa3 |
+        | n4p7m2k |
+        | 2jk8xab |
+        | zzz9999 |
+        | 2222222 |
+
+  Rule: UID field UI/UX specifications
+
+    Scenario: UID field placement
+      When the form loads
+      Then the UID field should be positioned near the top
+      And it should appear before or after the "Name" field
+      And it should be clearly labeled "UID" or "Item ID"
+
+    Scenario: UID field styling
+      When the form loads
+      Then the UID field should use monospace font
+      And it should have larger text size for readability
+      And it should have letter-spacing for clarity
+      And the field should visually indicate it's read-only
+
+    Scenario: Regenerate button styling
+      When the form loads
+      Then the "Regenerate" button should be compact
+      And it should use an icon (🔄 or ↻) or short text
+      And it should be positioned inline with the UID field (right side)
+      And it should have a clear hover state
+      And it should have appropriate spacing from the UID field
+
+    Scenario: Regenerate button interaction
+      When I hover over the "Regenerate" button
+      Then it should show a visual hover state
+      And optionally show a tooltip "Generate new ID"
+      When I click the "Regenerate" button
+      Then the button should show brief loading/animation feedback
+      And the new UID should appear immediately
+
+  Rule: UID persistence and submission
+
+    Scenario: UID is submitted with item
+      Given the form has pre-generated UID "qe3saa3"
+      And I fill in "Name" with "Laptop"
+      And I fill in "Category" with "Electronics"
+      When I submit the form
+      Then the item should be created with shortId "qe3saa3"
+      And the database should store shortId as primary key
+      And the item detail page should display "qe3saa3"
+      And the barcode should encode "https://haus.toph.so/qe3saa3"
+
+    Scenario: Creation timestamp stored separately
+      Given the form has pre-generated UID "qe3saa3"
+      When I submit the form at 2024-02-27T14:30:00Z
+      Then the item should have shortId "qe3saa3"
+      And the item should have createdAt "2024-02-27T14:30:00Z"
+      And the item should have updatedAt "2024-02-27T14:30:00Z"
+      And timestamps should be independent of the UID
+
+  Rule: Edge cases and validation
+
+    Scenario: Duplicate UID is detected (rare collision)
+      Given an item exists with UID "qe3saa3"
+      And the form generates the same UID "qe3saa3" by chance
+      When I submit the form
+      Then the system should detect the collision
+      And the system should automatically generate a new UID
+      And the item should be created successfully with a different UID
+      And the user should be notified "ID regenerated due to conflict"
+
+    Scenario: UID persists during form edits
+      Given the form has loaded with UID "qe3saa3"
+      When I fill in "Name" with "Cable"
+      And I change "Name" to "Cable Drum"
+      And I fill in other fields
+      Then the UID should remain "qe3saa3"
+      And the UID should NOT auto-regenerate on field changes
+
+    Scenario: UID regenerates on explicit action only
+      Given the form has loaded with UID "qe3saa3"
+      When I interact with any form field
+      Then the UID should remain unchanged
+      And the UID should only change when "Regenerate" is clicked

flake.lock

@@ -38,16 +38,16 @@
     },
     "nixpkgs": {
       "locked": {
-        "lastModified": 1771903837,
-        "narHash": "sha256-sdaqdnsQCv3iifzxwB22tUwN/fSHoN7j2myFW5EIkGk=",
+        "lastModified": 1771848320,
+        "narHash": "sha256-0MAd+0mun3K/Ns8JATeHT1sX28faLII5hVLq0L3BdZU=",
         "owner": "NixOS",
         "repo": "nixpkgs",
-        "rev": "e764fc9a405871f1f6ca3d1394fb422e0a0c3951",
+        "rev": "2fc6539b481e1d2569f25f8799236694180c0993",
         "type": "github"
       },
       "original": {
         "owner": "NixOS",
-        "ref": "nixos-25.11",
+        "ref": "nixos-unstable",
         "repo": "nixpkgs",
         "type": "github"
       }

flake.nix

@@ -1,8 +1,8 @@
 {
-  description = "SolidHaus — Local-first household inventory app";
+  description = "Kammer — Local-first household inventory app";
 
   inputs = {
-    nixpkgs.url = "github:NixOS/nixpkgs/nixos-25.11";
+    nixpkgs.url = "github:NixOS/nixpkgs/nixos-unstable";
     flake-parts.url = "github:hercules-ci/flake-parts";
     sd-card.url = "git+ssh://git@git.toph.so/toph/sd-card";
   };
@@ -29,8 +29,8 @@
       in {
         packages = {
           # Build the SvelteKit app
-          solidhaus = buildNpmPackage {
-            pname = "solidhaus";
+          kammer = buildNpmPackage {
+            pname = "kammer";
             version = "0.0.1";
 
             src = ./.;
@@ -48,13 +48,13 @@
 
             meta = {
               description = "Local-first household inventory app with barcode scanning";
-              homepage = "https://git.toph.so/toph/solidhaus";
+              homepage = "https://git.toph.so/toph/kammer";
             };
           };
 
           # OCI image with nginx serving the built app
-          solidhaus-image = pkgs.dockerTools.buildLayeredImage {
-            name = "registry.toph.so/solidhaus";
+          kammer-image = pkgs.dockerTools.buildLayeredImage {
+            name = "registry.toph.so/kammer";
             tag = "latest";
 
             contents = with pkgs; [
@@ -85,7 +85,7 @@
 
               # Copy built app
               mkdir -p usr/share/nginx/html
-              cp -r ${config.packages.solidhaus}/* usr/share/nginx/html/
+              cp -r ${config.packages.kammer}/* usr/share/nginx/html/
 
               # Create nginx config
               cat > etc/nginx/nginx.conf <<'EOF'
@@ -147,22 +147,22 @@
             devPort = 5173; # Vite default port
           };
 
-          default = config.packages.solidhaus;
+          default = config.packages.kammer;
         };
 
         apps = {
           # Push image to registry
-          push-solidhaus-image = {
+          push-kammer-image = {
             type = "app";
             program = pkgs.lib.getExe (pkgs.writeShellApplication {
-              name = "push-solidhaus-image";
+              name = "push-kammer-image";
               runtimeInputs = [pkgs.skopeo];
               text = ''
-                image=$(nix build --no-link --print-out-paths .#solidhaus-image)
+                image=$(nix build --no-link --print-out-paths .#kammer-image)
                 skopeo copy \
                   --insecure-policy \
                   "docker-archive:$image" \
-                  "docker://registry.toph.so/solidhaus:latest"
+                  "docker://registry.toph.so/kammer:latest"
               '';
             });
           };

result

@@ -0,0 +1 @@
+/nix/store/3dna41ydmr1ia5fiicgzf19p1z68l10v-solidhaus.tar.gz