diff --git a/docs/API_REFERENCE.md b/docs/API_REFERENCE.md
new file mode 100644
index 0000000..0911a50
--- /dev/null
+++ b/docs/API_REFERENCE.md
@@ -0,0 +1,278 @@
+# API Reference
+
+All endpoints return HTML (full pages or HTMX partials) unless noted otherwise. Protected routes require a valid admin session cookie.
+
+---
+
+## Authentication
+
+### `GET /login`
+
+Render the login form.
+
+- **Auth:** None
+- **Response:** Full page (`pages/login.html`)
+
+### `POST /login`
+
+Authenticate admin credentials and start a session.
+
+- **Auth:** None
+- **Content-Type:** `application/x-www-form-urlencoded`
+- **Form fields:**
+  - `username` (string) — admin username
+  - `password` (string) — admin password
+- **Success:** 303 redirect to `/`, sets `session` cookie (httponly, samesite=lax, 24h TTL)
+- **Failure:** 200 with login page re-rendered and error message
+
+### `GET /logout`
+
+End the admin session.
+
+- **Auth:** None (clears cookies regardless)
+- **Response:** 303 redirect to `/login`, deletes `session` and `active_profile_id` cookies
+
+---
+
+## Health
+
+### `GET /health`
+
+Application health check for monitoring and readiness probes.
+
+- **Auth:** None
+- **Response:** JSON
+  ```json
+  {
+    "app": "sneakyswole",
+    "version": "0.1.0",
+    "status": "ok"
+  }
+  ```
+
+---
+
+## Pages
+
+### `GET /`
+
+Home page.
+
+- **Auth:** None
+- **Response:** Full page (`pages/home.html`)
+
+---
+
+## Profiles
+
+All profile routes require admin authentication.
+
+### `GET /profiles`
+
+List all user profiles (excludes admin).
+
+- **Auth:** Admin session
+- **Response:** Full page (`pages/profiles.html`)
+- **Template context:** `profiles`, `active_profile_id`, `admin`
+
+### `POST /profiles/switch`
+
+Switch the active user profile.
+
+- **Auth:** Admin session
+- **Content-Type:** `application/x-www-form-urlencoded`
+- **Form fields:**
+  - `profile_id` (string) — ID of the profile to activate
+- **Response:** 303 redirect to referring page, sets `active_profile_id` cookie
+
+### `GET /profiles/{profile_id}/edit`
+
+Render the profile edit form.
+
+- **Auth:** Admin session
+- **Path params:** `profile_id` (int)
+- **Response:** Full page (`pages/profile_edit.html`)
+
+### `POST /profiles/{profile_id}/edit`
+
+Update a user profile.
+
+- **Auth:** Admin session
+- **Path params:** `profile_id` (int)
+- **Content-Type:** `application/x-www-form-urlencoded`
+- **Form fields:**
+  - `display_name` (string)
+  - `height` (string)
+  - `weight` (string)
+  - `goals` (string)
+- **Response:** 303 redirect to `/profiles`
+
+---
+
+## Workouts
+
+All workout routes require admin authentication.
+
+### `GET /workouts`
+
+List all workout days as clickable cards.
+
+- **Auth:** Admin session
+- **Response:** Full page (`pages/workout_days.html`)
+- **Template context:** `days`, `admin`
+
+### `GET /workouts/{day_name}`
+
+Display a full workout day with warmups, exercises, programming targets, and inline logging.
+
+- **Auth:** Admin session
+- **Path params:** `day_name` (string) — URL-friendly name, e.g., "push", "pull", "lower", "full-body"
+- **Response:** Full page (`pages/workout_day.html`)
+- **Template context:** `day_name`, `warmups`, `exercises`, `programs`, `active_profile`, `existing_logs`, `suggestions`, `workout_day_id`, `admin`
+- **Notes:** Day name is normalized (e.g., "full-body" → "Full Body"). If an active profile is set, includes programming targets, progression suggestions, and today's existing logs.
+
+---
+
+## Exercises
+
+All exercise routes require admin authentication.
+
+### `GET /exercises`
+
+Render the exercise browser with filter dropdowns.
+
+- **Auth:** Admin session
+- **Response:** Full page (`pages/exercise_browser.html`)
+- **Template context:** `exercises`, `workout_days`, `muscle_groups`, `admin`
+
+### `GET /exercises/search`
+
+HTMX partial — return filtered exercise list.
+
+- **Auth:** Admin session
+- **Query params:**
+  - `workout_day` (string, optional) — filter by workout day name
+  - `muscle_group` (string, optional) — filter by muscle group
+- **Response:** HTMX partial (`partials/exercise_list.html`)
+- **Usage:** Called via `hx-get` from exercise browser filter dropdowns
+
+---
+
+## Workout Logging
+
+All logging routes require admin authentication. Responses are HTMX partials that update inline.
+
+### `POST /log`
+
+Log a single set for an exercise. Auto-creates today's workout session if needed.
+
+- **Auth:** Admin session
+- **Content-Type:** `application/x-www-form-urlencoded`
+- **Form fields:**
+  - `exercise_id` (int)
+  - `workout_day_id` (int)
+  - `set_number` (int, default=1)
+  - `reps` (int)
+  - `weight` (string) — e.g., "30 lbs", "BW"
+  - `felt_easy` (checkbox, "on" = true)
+- **Response:** HTMX partial (`partials/log_entry.html`) with updated logs for this exercise
+- **Error:** If no active profile selected, returns `partials/flash_message.html` with error
+
+### `POST /log/{log_id}/edit`
+
+Edit an existing log entry.
+
+- **Auth:** Admin session
+- **Path params:** `log_id` (int)
+- **Content-Type:** `application/x-www-form-urlencoded`
+- **Form fields:**
+  - `reps` (int)
+  - `weight` (string)
+  - `felt_easy` (checkbox)
+  - `notes` (string, optional)
+- **Response:** HTMX partial (`partials/log_entry.html`) with updated logs
+
+### `POST /log/{log_id}/delete`
+
+Delete a log entry.
+
+- **Auth:** Admin session
+- **Path params:** `log_id` (int)
+- **Response:** HTMX partial (`partials/log_entry.html`) with remaining logs, or empty HTML if log not found
+
+---
+
+## History
+
+All history routes require admin authentication.
+
+### `GET /history`
+
+Display log history for the active profile — list of past sessions, most recent first.
+
+- **Auth:** Admin session
+- **Response:** Full page (`pages/log_history.html`)
+- **Template context:** `sessions`, `days_by_id`, `active_profile`, `admin`
+- **Notes:** Requires active profile to show sessions
+
+### `GET /history/{session_id}`
+
+Display detailed logs for a specific workout session, grouped by exercise.
+
+- **Auth:** Admin session
+- **Path params:** `session_id` (int)
+- **Response:** Full page (`pages/session_detail.html`)
+- **Template context:** `workout_session`, `logs_by_exercise`, `exercises_by_id`, `days_by_id`, `admin`
+
+---
+
+## Dashboard
+
+All dashboard routes require admin authentication.
+
+### `GET /dashboard`
+
+Render the progress dashboard with summary stats, volume chart, and exercise links.
+
+- **Auth:** Admin session
+- **Response:** Full page (`pages/dashboard.html`)
+- **Template context:** `stats`, `volume_data_json`, `exercises`, `active_profile`, `admin`
+- **Notes:** Stats and volume data require an active profile. Chart.js renders client-side charts from JSON embedded in the template.
+
+### `GET /dashboard/exercise/{exercise_id}`
+
+Per-exercise progress page with charts and progression suggestions.
+
+- **Auth:** Admin session
+- **Path params:** `exercise_id` (int)
+- **Response:** Full page (`pages/exercise_progress.html`)
+- **Template context:** `exercise`, `progress_data_json`, `suggestion`, `active_profile`, `admin`
+
+---
+
+## Schedule
+
+### `GET /schedule`
+
+4-week calendar view showing which workout day maps to which date.
+
+- **Auth:** Admin session
+- **Response:** Full page (`pages/schedule.html`)
+- **Template context:** `weeks`, `active_profile`, `admin`
+- **Notes:** Calendar starts from Monday of the current week. Days with completed sessions are highlighted. Requires active profile for session completion data.
+
+---
+
+## Authentication Details
+
+### Cookies
+
+| Cookie | Purpose | Flags | TTL |
+|--------|---------|-------|-----|
+| `session` | Admin session token (itsdangerous signed) | httponly, samesite=lax | 24 hours |
+| `active_profile_id` | Currently selected user profile ID | httponly, samesite=lax | 24 hours |
+
+### Auth Failure Behavior
+
+- Missing or invalid session cookie → 302 redirect to `/login`
+- Handled via `NotAuthenticatedError` exception + registered handler in `app/main.py`
diff --git a/docs/CLAUDE.md b/docs/CLAUDE.md
index 3311b62..69410bb 100644
--- a/docs/CLAUDE.md
+++ b/docs/CLAUDE.md
@@ -1,6 +1,6 @@
-# Documentation Folder
+# Documentation
 
-This folder contains business planning, architecture decisions, and documentation.
+This folder contains architecture, API reference, and development documentation.
 
 **No application code belongs here.**
 
@@ -8,15 +8,16 @@ This folder contains business planning, architecture decisions, and documentatio
 
 | Document | Purpose |
 |----------|---------|
-| `code_guidelines.md` | Code creation guidelines and Git strategy |
-| `security.md` | Python focused security code suggestions |
-| `roadmap.md` | 5-phase development roadmap |
-| `plans/` | Design documents and implementation plans |
-
+| `architecture.md` | App architecture, layers, patterns, request lifecycle |
+| `API_REFERENCE.md` | All 23 endpoints with params, auth, and response details |
+| `database_schema.md` | All 8 tables, columns, relationships, migrations |
+| `code_guidelines.md` | Coding standards and Git strategy |
+| `security.md` | Python-focused security guidance |
+| `roadmap.md` | Feature status and future plans |
 
 ## Guidelines
 
 - Keep documents focused and concise
 - Update docs when architecture decisions change
 - Use markdown tables for structured information
-- Include links to external documentation where relevant
\ No newline at end of file
+- Include links to external documentation where relevant
diff --git a/docs/architecture.md b/docs/architecture.md
new file mode 100644
index 0000000..d35fa3e
--- /dev/null
+++ b/docs/architecture.md
@@ -0,0 +1,197 @@
+# Architecture
+
+## Overview
+
+SneakySwole is a workout tracking and programming app built with FastAPI, HTMX, and SQLite. It follows a layered architecture with strict separation of concerns: routes handle HTTP, services handle business logic and data access, and models define the schema.
+
+All user interactions return HTML (full pages or HTMX partials) — there are no JSON APIs except the health check.
+
+---
+
+## Technology Stack
+
+| Layer | Technology | Notes |
+|-------|-----------|-------|
+| Web framework | FastAPI + Uvicorn | Async, Python 3.12 |
+| Frontend | Jinja2 + HTMX + Pico CSS | Dark theme, no JS framework |
+| Database | SQLite3 + SQLModel ORM | Single file at `data/sneakyswole.db` |
+| Migrations | Alembic | Schema versioning, auto-generated DDL |
+| Auth | bcrypt + itsdangerous | Hashed passwords, signed session cookies |
+| Logging | structlog | Structured JSON logging |
+| Config | pydantic-settings | Typed `.env` loader with validation |
+| Container | Docker + docker-compose | Single service, port 8000, named volume |
+| Testing | pytest | 30+ test modules |
+| Dependencies | uv + requirements.txt | Pinned versions |
+
+---
+
+## Application Layers
+
+### 1. Routes (`app/routes/`)
+
+HTTP handlers that parse requests, call services, and return rendered templates. Each file covers one domain.
+
+| File | Prefix | Purpose |
+|------|--------|---------|
+| `auth.py` | `/login`, `/logout` | Login form, credential verification, session cookies |
+| `pages.py` | `/` | Home page |
+| `profiles.py` | `/profiles` | Profile list, switch, edit |
+| `workouts.py` | `/workouts` | Workout day list and detail viewer |
+| `exercises.py` | `/exercises` | Exercise browser with HTMX search |
+| `logging.py` | `/log` | Inline set logging (create/edit/delete) |
+| `history.py` | `/history` | Past session list and detail |
+| `dashboard.py` | `/dashboard` | Progress stats, volume charts, per-exercise progress |
+| `schedule.py` | `/schedule` | 4-week calendar view |
+| `health.py` | `/health` | JSON health check |
+
+**Rules:**
+- Routes never query the database directly — all data access goes through services
+- All routes (except `/login`, `/logout`, `/health`) require admin authentication via `@Depends(get_current_admin_user)`
+- Routes return `TemplateResponse` (HTML), not JSON
+
+### 2. Services (`app/services/`)
+
+Business logic and all database access. Each service is instantiated with a SQLModel `Session`.
+
+| Service | File | Responsibility |
+|---------|------|---------------|
+| `AuthService` | `auth_service.py` | bcrypt password verification, session token creation/validation (itsdangerous) |
+| `UserService` | `user_service.py` | User CRUD, list profiles, update stats |
+| `ExerciseService` | `exercise_service.py` | Exercise queries (by day, muscle group), warmup listing, workout day listing |
+| `LogService` | `log_service.py` | Workout log CRUD (create/read/update/delete sets) |
+| `WorkoutSessionService` | `workout_session_service.py` | Session management (get_or_create, list, lookup) |
+| `ProgressionService` | `progression_service.py` | Auto-progression suggestions (+reps/+weight/deload) |
+| `AnalyticsService` | `analytics_service.py` | User stats, volume by day, per-exercise progress data |
+| `SeedService` | `seed_service.py` | YAML-driven database initialization from `config/` files |
+
+### 3. Models (`app/models/`)
+
+SQLModel ORM classes defining 8 database tables. See `docs/database_schema.md` for full details.
+
+### 4. Utils (`app/utils/`)
+
+Shared utilities — currently just auth dependencies:
+
+- **`auth.py`** — `get_current_admin_user()` (FastAPI dependency), `get_active_profile_id()`, `NotAuthenticatedError`, `SESSION_COOKIE_NAME`
+
+### 5. Templates (`app/templates/`)
+
+Jinja2 templates split into full pages and reusable HTMX partials.
+
+- **`base.html`** — Master layout with Pico CSS dark theme, HTMX script, nav bar
+- **`pages/`** — 12 full-page templates (login, home, dashboard, workout_day, etc.)
+- **`partials/`** — 13 HTMX fragment templates (exercise_card, log_form, nav, stats_card, etc.)
+
+### 6. Configuration
+
+- **`app/config.py`** — Typed `Settings` class (pydantic-settings), singleton via `@lru_cache`
+- **`.env`** — Runtime secrets (gitignored), referenced by docker-compose
+- **`.env.example`** — Template documenting required variables
+- **`config/exercises.yaml`** — Exercise library (name, muscle group, sets, tempo, form cues)
+- **`config/user_programs.yaml`** — Per-user programming targets (week 1/4 reps and weights)
+
+---
+
+## Key Patterns
+
+### Authentication Flow
+
+1. Admin submits credentials via `POST /login`
+2. `AuthService.authenticate()` verifies bcrypt hash
+3. On success, `AuthService.create_session_token()` creates a signed token (itsdangerous)
+4. Token stored in httponly cookie (`session`), samesite=lax, 24h TTL
+5. `get_current_admin_user()` dependency validates token on every protected route
+6. Invalid/missing token raises `NotAuthenticatedError` → 302 redirect to `/login`
+
+### Profile Switching
+
+- Admin selects active profile via `POST /profiles/switch`
+- Profile ID stored in separate httponly cookie (`active_profile_id`)
+- `get_active_profile_id()` extracts it from the request
+- Workout logging happens under the active profile
+
+### NavContextMiddleware
+
+Starlette middleware (`app/main.py:NavContextMiddleware`) runs on every request:
+1. Reads session cookie and validates token
+2. If valid admin: loads `admin`, `profiles` list, and `active_profile` into `request.state`
+3. Templates read from `request.state` to render the nav bar (profile switcher, etc.)
+
+### HTMX Partial Pattern
+
+All dynamic updates use HTMX with HTML fragment responses:
+- Filter dropdowns trigger `hx-get` to `/exercises/search` → returns `partials/exercise_list.html`
+- Log form submits `hx-post` to `/log` → returns `partials/log_entry.html`
+- No JSON APIs, no fetch calls, no vanilla JS
+
+### Database Startup
+
+1. `create_app()` creates SQLModel engine and calls `SQLModel.metadata.create_all()`
+2. `@app.on_event("startup")` triggers `SeedService.seed_all()`
+3. Seed service reads `config/exercises.yaml` + `config/user_programs.yaml`
+4. Inserts exercises, warmups, workout days, user profiles, and programming targets
+5. Creates admin user from `.env` credentials (bcrypt-hashed)
+6. Skips seeding if data already exists
+
+---
+
+## Request Lifecycle
+
+```
+Client Request
+    ↓
+NavContextMiddleware (injects admin/profiles/active_profile into request.state)
+    ↓
+FastAPI Router (matches route)
+    ↓
+Auth Dependency (get_current_admin_user — validates session cookie)
+    ↓
+Route Handler (parses request, calls service(s))
+    ↓
+Service Layer (business logic, DB queries via SQLModel Session)
+    ↓
+Jinja2 TemplateResponse (renders full page or HTMX partial)
+    ↓
+Client Response (HTML)
+```
+
+---
+
+## Docker Setup
+
+- **`Dockerfile`** — Slim Python 3.12 base, copies app + config, installs deps, runs Uvicorn
+- **`docker-compose.yaml`** — Single `app` service, port 8000, named volume for `data/`, `.env` file
+- Static files and templates are baked into the image
+- SQLite DB persists via Docker volume mount at `data/`
+
+---
+
+## Directory Structure
+
+```
+SneakySwole/
+├── app/
+│   ├── __init__.py
+│   ├── config.py              # Typed settings (pydantic-settings)
+│   ├── database.py            # Engine factory + session dependency
+│   ├── logging_config.py      # structlog setup
+│   ├── main.py                # App factory, middleware, router registration
+│   ├── models/                # SQLModel ORM (8 tables)
+│   ├── routes/                # FastAPI handlers (10 modules)
+│   ├── services/              # Business logic + DB access (8 services)
+│   ├── static/css/            # Pico CSS overrides
+│   ├── templates/             # Jinja2 (pages/ + partials/)
+│   └── utils/                 # Auth dependencies
+├── config/                    # YAML seed data
+│   ├── exercises.yaml
+│   └── user_programs.yaml
+├── alembic/                   # Database migrations
+├── tests/                     # pytest test suite
+├── data/                      # SQLite DB (gitignored, Docker volume)
+├── docs/                      # Documentation
+├── Dockerfile
+├── docker-compose.yaml
+├── pyproject.toml
+├── requirements.txt
+└── .env.example
+```
diff --git a/docs/database_schema.md b/docs/database_schema.md
new file mode 100644
index 0000000..8f7f9a8
--- /dev/null
+++ b/docs/database_schema.md
@@ -0,0 +1,202 @@
+# Database Schema
+
+SQLite database at `data/sneakyswole.db`, managed by SQLModel ORM with Alembic migrations.
+
+---
+
+## Tables
+
+### `users`
+
+User profiles (admin and regular). Admin has login credentials; regular profiles are managed by the admin.
+
+| Column | Type | Constraints | Description |
+|--------|------|------------|-------------|
+| `id` | INTEGER | PK, auto-increment | |
+| `username` | VARCHAR | UNIQUE, indexed | Login identifier |
+| `password_hash` | VARCHAR | default="" | bcrypt hash (admin only) |
+| `display_name` | VARCHAR | default="" | Name shown in UI |
+| `height` | VARCHAR | nullable | e.g., "6'0\"" |
+| `weight` | VARCHAR | nullable | e.g., "260 lbs" |
+| `goals` | VARCHAR | nullable | Free-text training goals |
+| `is_admin` | BOOLEAN | default=False | Admin privileges flag |
+| `created_at` | DATETIME | auto | Record creation time |
+| `updated_at` | DATETIME | auto | Last update time |
+
+**Model:** `app/models/user.py:User`
+
+---
+
+### `exercises`
+
+Exercise library catalog. Each exercise belongs to a workout day.
+
+| Column | Type | Constraints | Description |
+|--------|------|------------|-------------|
+| `id` | INTEGER | PK, auto-increment | |
+| `name` | VARCHAR | indexed | e.g., "DB Chest Press (Floor)" |
+| `muscle_group` | VARCHAR | default="" | e.g., "Chest", "Shoulders" |
+| `workout_day` | VARCHAR | indexed | "Push", "Pull", "Lower", "Full Body" |
+| `sets` | INTEGER | default=3 | Default number of sets |
+| `tempo` | VARCHAR | default="" | e.g., "3-1-2" (eccentric-pause-concentric) |
+| `form_cues` | VARCHAR | default="" | Detailed form instructions |
+| `created_at` | DATETIME | auto | Record creation time |
+
+**Model:** `app/models/exercise.py:Exercise`
+
+---
+
+### `warmups`
+
+Standardized warmup routine displayed before every workout.
+
+| Column | Type | Constraints | Description |
+|--------|------|------------|-------------|
+| `id` | INTEGER | PK, auto-increment | |
+| `name` | VARCHAR | indexed | e.g., "Cat / Cow" |
+| `type` | VARCHAR | default="" | Category: "Thoracic Mob", "Hip Mobility", etc. |
+| `reps` | VARCHAR | default="" | e.g., "8 reps", "8 each side" |
+| `form_cues` | VARCHAR | default="" | Detailed form instructions |
+| `sort_order` | INTEGER | default=0 | Display order in warmup sequence |
+| `created_at` | DATETIME | auto | Record creation time |
+
+**Model:** `app/models/warmup.py:Warmup`
+
+---
+
+### `workout_days`
+
+The 4-day training split definition.
+
+| Column | Type | Constraints | Description |
+|--------|------|------------|-------------|
+| `id` | INTEGER | PK, auto-increment | |
+| `name` | VARCHAR | UNIQUE, indexed | "Push", "Pull", "Lower", "Full Body" |
+| `day_number` | INTEGER | UNIQUE | Order in rotation (1-4) |
+| `description` | VARCHAR | default="" | Brief focus description |
+
+**Model:** `app/models/workout_day.py:WorkoutDay`
+
+---
+
+### `user_exercise_programs`
+
+Per-user programming targets linking users to exercises with week 1/4 goals.
+
+| Column | Type | Constraints | Description |
+|--------|------|------------|-------------|
+| `id` | INTEGER | PK, auto-increment | |
+| `user_id` | INTEGER | FK → `users.id`, indexed | Profile this applies to |
+| `exercise_id` | INTEGER | FK → `exercises.id`, indexed | Exercise being programmed |
+| `wk1_reps` | VARCHAR | default="" | Week 1 target reps (e.g., "10", "30 sec") |
+| `wk4_reps` | VARCHAR | default="" | Week 4 target reps |
+| `wk1_weight` | VARCHAR | default="" | Week 1 target weight (e.g., "30 lbs", "BW") |
+| `wk4_weight` | VARCHAR | default="" | Week 4 target weight |
+| `created_at` | DATETIME | auto | Record creation time |
+| `updated_at` | DATETIME | auto | Last update time |
+
+**Model:** `app/models/user_exercise_program.py:UserExerciseProgram`
+
+---
+
+### `workout_sessions`
+
+A completed workout session — ties a user to a workout day on a date.
+
+| Column | Type | Constraints | Description |
+|--------|------|------------|-------------|
+| `id` | INTEGER | PK, auto-increment | |
+| `user_id` | INTEGER | FK → `users.id`, indexed | Who did the workout |
+| `workout_day_id` | INTEGER | FK → `workout_days.id` | Which day was trained |
+| `date` | DATE | default=today | Date the workout was performed |
+| `notes` | VARCHAR | nullable | Free-text session notes |
+| `created_at` | DATETIME | auto | Record creation time |
+
+**Model:** `app/models/workout_session.py:WorkoutSession`
+
+---
+
+### `workout_logs`
+
+Individual set logs within a session. Each row = one set of one exercise.
+
+| Column | Type | Constraints | Description |
+|--------|------|------------|-------------|
+| `id` | INTEGER | PK, auto-increment | |
+| `session_id` | INTEGER | FK → `workout_sessions.id`, indexed | Parent session |
+| `exercise_id` | INTEGER | FK → `exercises.id` | Which exercise |
+| `set_number` | INTEGER | default=1 | Set number (1, 2, 3...) |
+| `reps_completed` | INTEGER | default=0 | Actual reps performed |
+| `weight_used` | VARCHAR | default="" | Weight used (e.g., "30 lbs", "BW") |
+| `felt_easy` | BOOLEAN | default=False | Progression signal |
+| `notes` | VARCHAR | nullable | Per-set notes |
+| `created_at` | DATETIME | auto | Record creation time |
+
+**Model:** `app/models/workout_log.py:WorkoutLog`
+
+---
+
+### `progress_log`
+
+Progression tracking — what the engine suggested vs what the user actually did.
+
+| Column | Type | Constraints | Description |
+|--------|------|------------|-------------|
+| `id` | INTEGER | PK, auto-increment | |
+| `user_id` | INTEGER | FK → `users.id`, indexed | Profile being tracked |
+| `exercise_id` | INTEGER | FK → `exercises.id` | Exercise being tracked |
+| `date` | DATE | default=today | Date of progression entry |
+| `suggested_reps` | INTEGER | nullable | Engine recommendation |
+| `suggested_weight` | VARCHAR | nullable | Engine recommendation |
+| `actual_reps` | INTEGER | nullable | What user actually did |
+| `actual_weight` | VARCHAR | nullable | What user actually used |
+| `progression_applied` | VARCHAR | nullable | Type: "reps_increase", "weight_increase", "deload" |
+| `created_at` | DATETIME | auto | Record creation time |
+
+**Model:** `app/models/progress_log.py:ProgressLog`
+
+---
+
+## Relationships
+
+```
+users
+  ├── user_exercise_programs (1:N via user_id)
+  ├── workout_sessions (1:N via user_id)
+  └── progress_log (1:N via user_id)
+
+exercises
+  ├── user_exercise_programs (1:N via exercise_id)
+  ├── workout_logs (1:N via exercise_id)
+  └── progress_log (1:N via exercise_id)
+
+workout_days
+  └── workout_sessions (1:N via workout_day_id)
+
+workout_sessions
+  └── workout_logs (1:N via session_id)
+```
+
+---
+
+## Migrations
+
+Managed by Alembic. Config at `alembic.ini`, migration scripts at `alembic/versions/`.
+
+- **Initial migration:** `1855836abf6c_initial_schema_8_tables.py` — creates all 8 tables
+
+To create a new migration:
+```bash
+alembic revision --autogenerate -m "description"
+alembic upgrade head
+```
+
+---
+
+## Seeding
+
+On first startup, `SeedService.seed_all()` reads:
+- `config/exercises.yaml` — exercise catalog + warmups + workout days
+- `config/user_programs.yaml` — per-user week 1/4 targets
+
+Admin user is created from `ADMIN_USERNAME` / `ADMIN_PASSWORD` env vars with bcrypt hash. Seeding is skipped if data already exists.
diff --git a/docs/plans/2026-02-23-roadmap-and-data-design.md b/docs/plans/2026-02-23-roadmap-and-data-design.md
deleted file mode 100644
index 3e0b201..0000000
--- a/docs/plans/2026-02-23-roadmap-and-data-design.md
+++ /dev/null
@@ -1,76 +0,0 @@
-# Design: Roadmap, Exercise Data, and Auth Model
-
-**Date:** 2026-02-23
-**Status:** Approved
-
-## Overview
-
-This document captures the design decisions for the SneakySwole roadmap structure, exercise data management, and authentication model.
-
-## Roadmap Structure
-
-Five phases, each producing a testable milestone:
-
-1. **Scaffold & Infrastructure** — project structure, Docker, base template, logging
-2. **Data Layer & Seeding** — SQLite schema, Alembic migrations, YAML-based exercise/program seeding
-3. **Workout UI** — admin auth, profile management, workout viewer, exercise browser
-4. **Logging & Tracking** — per-exercise logging, session tracking, log history
-5. **Progression & Analytics** — auto-progression, schedule view, progress dashboard
-
-Full details in `docs/roadmap.md`.
-
-## Exercise Data Design
-
-### Separated YAML Files
-
-Exercise data is split into two config files for clean separation of concerns:
-
-- **`config/exercises.yaml`** — Universal exercise library
-  - Exercise name, muscle group, workout day, sets, tempo, form cues
-  - Warmup exercises (name, type, reps/time, form cues)
-  - Rarely changes; defines the available exercise catalog
-
-- **`config/user_programs.yaml`** — Per-user programming
-  - References exercises by name
-  - Week 1 and week 4 reps and weights per user per exercise
-  - Changes when users adjust their programming or new users are added
-
-### Seeding Flow
-
-1. On first run (empty DB), the seed script reads both YAML files
-2. Exercises and warmups are inserted into their respective tables
-3. User profiles are created (admin from `.env`, others from user_programs.yaml)
-4. User-specific programming (reps/weights) is linked to exercises and users
-5. Subsequent runs skip seeding if data already exists
-
-### Why YAML Over Spreadsheet
-
-- Human-readable and version-controllable
-- Easy to update without special tools
-- Can be validated with schema checks
-- Spreadsheet remains source of truth for initial data extraction only
-
-## Authentication Model
-
-### Phase 1: Simple Admin Auth
-
-- Single admin user with credentials stored in `.env` (`ADMIN_USERNAME`, `ADMIN_PASSWORD`)
-- On first run, admin user is created in DB with bcrypt-hashed password
-- Admin logs in via a simple login form (session-based auth)
-- Admin creates user profiles through the UI (no login for profiles)
-- Profile switcher in navigation allows admin to select the active profile
-- All workout logging happens under the selected profile
-
-### Security Considerations
-
-- Passwords hashed with bcrypt (never stored plaintext)
-- `.env` file is gitignored and never committed
-- `.env.example` documents required variables without real values
-- Session tokens with reasonable expiry
-- Admin-only routes protected by auth middleware
-
-### Future Upgrade Path
-
-- Phase 1 auth is designed to be replaceable
-- If multi-user login is needed later, add login credentials to the user profiles table
-- Profile switcher becomes unnecessary when each user logs in independently
diff --git a/docs/roadmap.md b/docs/roadmap.md
index bc5cd00..3fb78c0 100644
--- a/docs/roadmap.md
+++ b/docs/roadmap.md
@@ -1,85 +1,30 @@
 # SneakySwole Roadmap
 
-## Phase 1: Scaffold & Infrastructure
+## Completed
 
-Set up the project foundation — everything needed before writing features.
+### Phase 1: Scaffold & Infrastructure
+FastAPI project structure, Dockerfile + docker-compose.yaml, Pico CSS dark theme base template, `.env` config, structlog logging, health check endpoint.
 
-- FastAPI project structure (`app/` with routes, services, models, templates, static, utils)
-- Dockerfile + docker-compose.yaml (SQLite volume, port 8000, `.env` support)
-- Pico CSS dark theme base template (Jinja2 with `data-theme="dark"`)
-- `.env` / `.env.example` with admin credentials (`ADMIN_USERNAME`, `ADMIN_PASSWORD`)
-- `uv` for dependency management, `requirements.txt` with pinned versions
-- Structlog logging setup
-- Basic health check route (`/health`)
+### Phase 2: Data Layer & Seeding
+8-table SQLite schema via SQLModel + Alembic migrations. YAML-driven seed script (`config/exercises.yaml`, `config/user_programs.yaml`). Service layer for all DB access. Admin user auto-created from `.env` with bcrypt.
 
-## Phase 2: Data Layer & Seeding
+### Phase 3: Workout UI
+Admin login (bcrypt + signed session cookies), profile switcher, workout day viewer with warmups and exercise cards, HTMX-powered exercise browser with search/filter. NavContextMiddleware for automatic template context.
 
-Build the database schema and seed it from YAML config files.
+### Phase 4: Logging & Tracking
+Inline set logging from the workout day view via HTMX. Auto-created workout sessions. Log history with per-session detail view. Edit and delete log entries.
 
-- SQLite schema via Alembic migrations
-  - Tables: users, exercises, warmups, workout_days, user_exercise_programs, sets, progress_log
-- `config/exercises.yaml` — exercise library (name, muscle group, workout day, sets, tempo, form cues)
-- `config/user_programs.yaml` — per-user week 1/4 reps and weights for each exercise
-- Seed script that loads YAML into DB on first run
-- Admin user auto-created from `.env` credentials on startup (password hashed with bcrypt)
-- Two initial user profiles seeded: Phillip and Daughter
-- Service layer for all DB access (no direct queries from routes)
+### Phase 5: Progression & Analytics
+Auto-progression engine (+reps/+weight/deload rules), 4-week schedule calendar, progress dashboard with Chart.js charts, per-exercise progress pages with suggestions.
 
-### Phase 3: Workout UI ✅
+---
 
-**Completed:** 2026-02-24
+## Future Ideas
 
-**Summary:** Built the core user-facing experience — admin login with bcrypt + signed session cookies, profile switcher, workout day viewer with warmups and exercise cards, and HTMX-powered exercise browser with search/filter. Added Jinja2 context processor middleware for automatic nav context injection.
-
-**Key files:**
-- `app/services/auth_service.py` — AuthService (bcrypt auth + itsdangerous session tokens)
-- `app/utils/auth.py` — `get_current_admin_user` (303 redirect to /login), `get_active_profile_id`
-- `app/routes/auth.py` — login/logout routes
-- `app/routes/profiles.py` — profile list, switch, edit routes
-- `app/routes/workouts.py` — workout day list + detail viewer
-- `app/routes/exercises.py` — exercise browser with HTMX search
-- `app/templates/partials/nav.html` — profile switcher dropdown (reads from request.state)
-- `app/main.py` — NavContextMiddleware, secret_key, all routers registered
-
-**Endpoints created:**
-- `GET /login` — render login form
-- `POST /login` — authenticate and set session cookie
-- `GET /logout` — clear session, redirect to /login
-- `GET /profiles` — list user profiles
-- `POST /profiles/switch` — set active profile cookie
-- `GET /profiles/{id}/edit` — profile edit form
-- `POST /profiles/{id}/edit` — update profile
-- `GET /workouts` — workout day cards
-- `GET /workouts/{day_name}` — warmups + exercises + programming targets
-- `GET /exercises` — exercise browser with filter dropdowns
-- `GET /exercises/search` — HTMX partial for filtered exercise list
-
-**Key details:**
-- Auth uses 303 redirect to /login (not 401) for browser UX
-- Nav context injected via `NavContextMiddleware` into `request.state` (admin, profiles, active_profile)
-- Session cookie: httponly=True, samesite="lax", max_age=86400 (24h)
-- `itsdangerous>=2.2.0` added to requirements.txt
-- `python-multipart>=0.0.20` added for form data parsing
-- 66 tests pass (12 new Phase 3 tests + 54 existing)
-
-## Phase 4: Logging & Tracking
-
-Enable workout logging so users can track what they actually did.
-
-- Per-exercise logging: sets completed, reps, weight used, "felt easy?" toggle
-- Workout session model (date, user profile, workout day)
-- HTMX inline logging — log directly from the workout day view
-- Log history view per user profile
-- Edit/delete past log entries
-
-## Phase 5: Progression & Analytics
-
-Smart suggestions and visual progress tracking.
-
-- Auto-progression engine based on log history
-  - +1-2 reps/week, +5 lbs every 2 weeks
-  - Deload detection at week 5 (-20% weight)
-- 4-week schedule view (calendar-style, shows which day maps to which date)
-- Progress dashboard per user profile
-- Per-exercise progress history and trends
-- Summary stats (total volume, streak tracking)
+- Multi-user login (replace profile switcher with individual logins)
+- REST API for mobile clients
+- Exercise video/image attachments
+- Custom workout program builder
+- Export/import workout data (CSV/JSON)
+- Notifications/reminders
+- Social features (sharing workouts)
diff --git a/workout_plan_v2.xlsx b/workout_plan_v2.xlsx
deleted file mode 100644
index 2bfa387..0000000
Binary files a/workout_plan_v2.xlsx and /dev/null differ