style(dashboard): move version footer out of card

crates/secrets-core/src/db.rs

@@ -80,10 +80,12 @@ pub async fn migrate(pool: &PgPool) -> Result<()> {
             metadata    JSONB        NOT NULL DEFAULT '{}',
             version     BIGINT       NOT NULL DEFAULT 1,
             created_at  TIMESTAMPTZ  NOT NULL DEFAULT NOW(),
-            updated_at  TIMESTAMPTZ  NOT NULL DEFAULT NOW()
+            updated_at  TIMESTAMPTZ  NOT NULL DEFAULT NOW(),
+            deleted_at  TIMESTAMPTZ
         );
 
         -- Legacy unique constraint without user_id (single-user mode)
+        -- NOTE: These are rebuilt below with `deleted_at IS NULL` for soft-delete support.
         CREATE UNIQUE INDEX IF NOT EXISTS idx_entries_unique_legacy
             ON entries(folder, name)
             WHERE user_id IS NULL;
@@ -127,6 +129,17 @@ pub async fn migrate(pool: &PgPool) -> Result<()> {
         );
         CREATE INDEX IF NOT EXISTS idx_entry_secrets_secret_id ON entry_secrets(secret_id);
 
+        -- ── entry_relations: parent-child links between entries ──────────────────
+        CREATE TABLE IF NOT EXISTS entry_relations (
+            parent_entry_id UUID NOT NULL REFERENCES entries(id) ON DELETE CASCADE,
+            child_entry_id  UUID NOT NULL REFERENCES entries(id) ON DELETE CASCADE,
+            created_at      TIMESTAMPTZ NOT NULL DEFAULT NOW(),
+            PRIMARY KEY(parent_entry_id, child_entry_id),
+            CHECK (parent_entry_id <> child_entry_id)
+        );
+        CREATE INDEX IF NOT EXISTS idx_entry_relations_parent ON entry_relations(parent_entry_id);
+        CREATE INDEX IF NOT EXISTS idx_entry_relations_child ON entry_relations(child_entry_id);
+
         -- ── audit_log: append-only operation log ─────────────────────────────────
         CREATE TABLE IF NOT EXISTS audit_log (
             id          BIGINT GENERATED ALWAYS AS IDENTITY PRIMARY KEY,
@@ -170,6 +183,7 @@ pub async fn migrate(pool: &PgPool) -> Result<()> {
 
         -- Backfill: add notes to entries if not present (fresh installs already have it)
         ALTER TABLE entries ADD COLUMN IF NOT EXISTS notes TEXT NOT NULL DEFAULT '';
+        ALTER TABLE entries ADD COLUMN IF NOT EXISTS deleted_at TIMESTAMPTZ;
 
         -- ── secrets_history: field-level snapshot ────────────────────────────────
         CREATE TABLE IF NOT EXISTS secrets_history (
@@ -404,11 +418,11 @@ async fn migrate_schema(pool: &PgPool) -> Result<()> {
 
         CREATE UNIQUE INDEX IF NOT EXISTS idx_entries_unique_legacy
             ON entries(folder, name)
-            WHERE user_id IS NULL;
+            WHERE user_id IS NULL AND deleted_at IS NULL;
 
         CREATE UNIQUE INDEX IF NOT EXISTS idx_entries_unique_user
             ON entries(user_id, folder, name)
-            WHERE user_id IS NOT NULL;
+            WHERE user_id IS NOT NULL AND deleted_at IS NULL;
 
         -- ── Replace old namespace/kind indexes ────────────────────────────────────
         DROP INDEX IF EXISTS idx_entries_namespace;
@@ -420,6 +434,8 @@ async fn migrate_schema(pool: &PgPool) -> Result<()> {
             ON entries(folder) WHERE folder <> '';
         CREATE INDEX IF NOT EXISTS idx_entries_type
             ON entries(type) WHERE type <> '';
+        CREATE INDEX IF NOT EXISTS idx_entries_deleted_at
+            ON entries(deleted_at) WHERE deleted_at IS NOT NULL;
         CREATE INDEX IF NOT EXISTS idx_audit_log_folder_type
             ON audit_log(folder, type);
         CREATE INDEX IF NOT EXISTS idx_entries_history_folder_type_name