feat: add web push and sadhna tracker

migrations/0025_create_sadhna_logs.up.sql

@@ -0,0 +1,30 @@
+-- Sādhana streak: one row per user per day on which they chanted.
+--
+-- A "day complete" (what the streak + the growing-plant animation are
+-- built on) is the conjunction of two daily disciplines:
+--   1. chanting today's target rounds   → recorded here (chant_done)
+--   2. posting at least one quote today  → derived live from the posts
+--      table (a post whose created_at falls on the same calendar day)
+-- so this table only needs to capture the chanting half.
+--
+-- log_date is a DATE (not a timestamp) so the streak rolls over at UTC
+-- midnight without any timezone math, matching how the rest of the app
+-- buckets "today". chant_done is stored explicitly — decided at save time
+-- as rounds_completed >= the user's target THEN — so later edits to a
+-- user's daily_chanting_rounds never retroactively rewrite history.
+CREATE TABLE IF NOT EXISTS sadhna_logs (
+    id               UUID         PRIMARY KEY DEFAULT gen_random_uuid(),
+    user_id          UUID         NOT NULL REFERENCES users(id) ON DELETE CASCADE,
+    log_date         DATE         NOT NULL,
+    rounds_completed INTEGER      NOT NULL DEFAULT 0,
+    chant_done       BOOLEAN      NOT NULL DEFAULT FALSE,
+    created_at       TIMESTAMPTZ  NOT NULL DEFAULT now(),
+    updated_at       TIMESTAMPTZ  NOT NULL DEFAULT now(),
+    UNIQUE (user_id, log_date),
+    CHECK (rounds_completed >= 0 AND rounds_completed <= 1008)
+);
+
+-- The streak/growth computation walks a user's recent days newest-first;
+-- this serves both that scan and the "today" lookup.
+CREATE INDEX IF NOT EXISTS sadhna_logs_user_date_idx
+    ON sadhna_logs (user_id, log_date DESC);