Paginate the asset library with infinite scroll (Closes #970)

.gitignore

@@ -82,3 +82,6 @@ internal/contentviewer/dist/*
 
 # Claude Code session files
 .claude/
+
+# Resolved dev ports written by dev/start.sh (auto-relocation)
+dev/.dev-ports.env

dev/docker-compose.yml

@@ -20,7 +20,9 @@ services:
       # connects via localhost, and an all-interfaces 0.0.0.0 bind both exposes
       # the DB on the LAN and collides with any other specific-address :5432
       # listener (e.g. a kubefwd-forwarded cluster Postgres on a 127.x alias).
-      - "127.0.0.1:5432:5432"
+      # Host port is auto-relocated by dev/start.sh (DEV_PG_PORT) when 5432 is
+      # held by another stack; container port stays 5432. Defaults to 5432.
+      - "127.0.0.1:${DEV_PG_PORT:-5432}:5432"
     volumes:
       - acme_postgres_data:/var/lib/postgresql/data
       # Init script creates the mcp_test and apitest databases used by the
@@ -123,7 +125,7 @@ services:
     command: 'server -s3 -s3.port=8333 -s3.config=/etc/seaweedfs/s3.json -dir=/data -volume.max=5'
     ports:
       # Loopback only, matching the other dev services (see postgres above).
-      - "127.0.0.1:9000:8333"
+      - "127.0.0.1:${DEV_S3_PORT:-9000}:8333"
     volumes:
       - acme_seaweed_data:/data
       - ./seaweedfs-s3.json:/etc/seaweedfs/s3.json:ro
@@ -170,7 +172,7 @@ services:
     image: ollama/ollama:0.30.6@sha256:fbaaecc6c632a73c2b4ca25ef52dbee0b68d07783fcb850f916404c004040f90
     container_name: acme-dev-ollama
     ports:
-      - "127.0.0.1:11434:11434"
+      - "127.0.0.1:${DEV_OLLAMA_PORT:-11434}:11434"
     volumes:
       - acme_ollama_data:/root/.ollama
     healthcheck:

dev/info.sh

@@ -7,6 +7,17 @@
 # of truth is dev/platform.yaml (api_keys) and the dev Keycloak realm.
 set -euo pipefail
 
+# Load the ports resolved by the last `make dev`. start.sh auto-relocates the
+# Go API and Ollama (among others) when their defaults are held by another
+# stack; without these the banner below would print stale URLs. Falls back to
+# the defaults when the file is absent (dev never started this session).
+DEV_API_PORT=8080
+DEV_OLLAMA_PORT=11434
+if [ -f dev/.dev-ports.env ]; then
+  # shellcheck disable=SC1091
+  source dev/.dev-ports.env
+fi
+
 # Colors only when stdout is a terminal, so `make dev-info | pbcopy` and
 # log redirects stay clean.
 if [ -t 1 ]; then
@@ -18,12 +29,12 @@ fi
 echo -e "${BOLD}${GREEN}Local dev login${NC}"
 echo ""
 echo -e "  Portal UI:    ${CYAN}http://localhost:5173/portal/${NC}"
-echo -e "  Go API:       ${CYAN}http://localhost:8080${NC}"
+echo -e "  Go API:       ${CYAN}http://localhost:${DEV_API_PORT}${NC}"
 echo -e "  API key:      ${CYAN}acme-dev-key-2024${NC}   (send as ${BOLD}X-API-Key${NC} header)"
 echo ""
 echo -e "  ${BOLD}Portal sign-in (Keycloak OIDC)${NC}"
 echo -e "    ${CYAN}admin@example.com${NC}   / ${CYAN}admin-password${NC}    (dp_admin)"
 echo -e "    ${CYAN}analyst@example.com${NC} / ${CYAN}analyst-password${NC}  (dp_analyst)"
 echo -e "  Keycloak admin console: ${CYAN}http://localhost:9090/admin${NC}  (admin / admin)"
-echo -e "  Ollama embedder:        ${CYAN}http://localhost:11434${NC}  (model: nomic-embed-text — powers semantic indexing)"
+echo -e "  Ollama embedder:        ${CYAN}http://localhost:${DEV_OLLAMA_PORT}${NC}  (model: nomic-embed-text — powers semantic indexing)"
 echo ""

dev/platform.yaml

@@ -13,7 +13,9 @@ apiVersion: v1
 server:
   name: acme-data-platform
   transport: http
-  address: ":8080"
+  # DEV_API_PORT is auto-relocated by dev/start.sh when :8080 is held by
+  # another stack (e.g. a running DataHub). Defaults to 8080 when free.
+  address: ":${DEV_API_PORT:-8080}"
   description: |
     ACME Corp's unified data platform providing governed access to the enterprise
     data warehouse (Trino/Iceberg), data catalog (DataHub), and object storage (S3).
@@ -99,7 +101,7 @@ oauth:
   enabled: false
 
 database:
-  dsn: "postgres://platform:platform_secret@localhost:5432/mcp_platform?sslmode=disable"
+  dsn: "postgres://platform:platform_secret@localhost:${DEV_PG_PORT:-5432}/mcp_platform?sslmode=disable"
   max_open_conns: 10
 
 # Six ACME personas
@@ -283,7 +285,7 @@ toolkits:
     instances:
       dev-s3:
         enabled: true
-        endpoint: "http://localhost:9000"
+        endpoint: "http://localhost:${DEV_S3_PORT:-9000}"
         region: "us-east-1"
         access_key_id: "dev-access-key"
         secret_access_key: "dev-secret-key"
@@ -317,15 +319,15 @@ tuning:
 
 portal:
   enabled: true
-  public_base_url: "http://localhost:8080"
+  public_base_url: "http://localhost:${DEV_API_PORT:-8080}"
   s3_connection: dev-s3
   s3_bucket: portal-assets
 
 memory:
   embedding:
     provider: ollama
     ollama:
-      url: "http://localhost:11434"
+      url: "http://localhost:${DEV_OLLAMA_PORT:-11434}"
       model: "nomic-embed-text"
 
 knowledge:

dev/seed-s3.sh

@@ -6,7 +6,8 @@
 # This prevents clearing generated thumbnails on every dev restart.
 set -euo pipefail
 
-API="http://localhost:8080"
+# DEV_API_PORT is exported by dev/start.sh (auto-relocated when 8080 is busy).
+API="http://localhost:${DEV_API_PORT:-8080}"
 API_KEY="acme-dev-key-2024"
 CONTENT_DIR="dev/seed-content"
 
@@ -33,3 +34,23 @@ upload "asset-003" "$CONTENT_DIR/asset-003.jsx"
 upload "asset-004" "$CONTENT_DIR/asset-004.md"
 upload "asset-005" "$CONTENT_DIR/asset-005.svg"
 upload "asset-006" "$CONTENT_DIR/asset-006.html"
+
+# Content for the 120 generated demo assets (seed-0001..0120 from seed.sql).
+# Reuse the five content files, cycled by the same (n % 5) index used in the
+# SQL so each generated asset's bytes match its content_type. Uploaded in
+# parallel batches so this stays a few seconds, not a minute of serial curls.
+# The GET-404 skip in upload() makes reruns a no-op (preserves thumbnails).
+GENERATED_CONTENT=(
+  "$CONTENT_DIR/asset-001.html"  # n % 5 == 0  -> text/html
+  "$CONTENT_DIR/asset-002.csv"   # n % 5 == 1  -> text/csv
+  "$CONTENT_DIR/asset-003.jsx"   # n % 5 == 2  -> text/jsx
+  "$CONTENT_DIR/asset-004.md"    # n % 5 == 3  -> text/markdown
+  "$CONTENT_DIR/asset-005.svg"   # n % 5 == 4  -> image/svg+xml
+)
+for n in $(seq 1 120); do
+  id=$(printf 'seed-%04d' "$n")
+  upload "$id" "${GENERATED_CONTENT[$((n % 5))]}" &
+  # Cap concurrency so we do not open 120 sockets at once.
+  if [ "$((n % 16))" -eq 0 ]; then wait; fi
+done
+wait

dev/seed.sql

@@ -11,7 +11,8 @@
 --   50 fresh audit events within the last hour (new each restart)
 --   8 knowledge insights in various states
 --   2 knowledge changesets (1 applied, 1 rolled back)
---   6 portal assets with versions and shares
+--   6 curated portal assets (with versions and shares) + 120 generated demo
+--     assets so the library exercises pagination (126 total under "Mine")
 --   3 portal collections with sections, items, and a public share
 
 -- ============================================================================
@@ -561,6 +562,36 @@ ON CONFLICT (id) DO UPDATE SET
   content_type = EXCLUDED.content_type,
   tags = EXCLUDED.tags;
 
+-- Bulk demo assets (120) so the portal library has enough volume to exercise
+-- pagination / "Load more" out of the box — six assets never surfaced the
+-- 50-per-page behaviour. All owned by apikey:admin (the acme-dev-key-2024 API
+-- key, so they show under "Mine"), content type cycled through the five kinds,
+-- created_at staggered by the hour so created_at DESC ordering is stable.
+-- Content is uploaded per asset by seed-s3.sh (reusing the five content files),
+-- so the placeholder s3_key here is replaced by a real versioned key on upload.
+INSERT INTO portal_assets (
+  id, owner_id, owner_email, name, description, content_type,
+  s3_bucket, s3_key, size_bytes, tags, provenance, session_id,
+  current_version, created_at, updated_at
+)
+SELECT
+  'seed-' || lpad(n::text, 4, '0'),
+  'apikey:admin', 'admin@apikey.local',
+  (ARRAY['Sales Dashboard','Inventory Export','Store Comparison','Pipeline Notes','Regional Heatmap'])[(n % 5) + 1]
+    || ' ' || lpad(n::text, 4, '0'),
+  'Generated demo asset #' || n || ' — seeded so the portal library exercises pagination.',
+  (ARRAY['text/html','text/csv','text/jsx','text/markdown','image/svg+xml'])[(n % 5) + 1],
+  'portal-assets',
+  'portal/apikey:admin/seed-' || lpad(n::text, 4, '0') || '/v1/content'
+    || (ARRAY['.html','.csv','.jsx','.md','.svg'])[(n % 5) + 1],
+  (ARRAY[4280, 15720, 6340, 2890, 8150])[(n % 5) + 1],
+  jsonb_build_array('demo', (ARRAY['sales','inventory','stores','pipeline','regional'])[(n % 5) + 1]),
+  '{"tool": "save_artifact", "session_id": "sess-demo"}'::jsonb,
+  'sess-demo-' || n, 1,
+  NOW() - (n || ' hours')::interval, NOW() - (n || ' hours')::interval
+FROM generate_series(1, 120) AS n
+ON CONFLICT (id) DO NOTHING;
+
 -- Asset versions (one per asset, matching the current_version=1)
 INSERT INTO portal_asset_versions (
   id, asset_id, version, s3_key, s3_bucket, content_type, size_bytes,