refactor: convert guru-rmm to git submodule (gururmm Gitea repo)

Removes the stale copy of gururmm source from claudetools tracking and
replaces it with a submodule pointing to the live gururmm Gitea repo.
Fixes context drift between session logs and actual codebase state.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

projects/msp-tools/guru-rmm/server/migrations/002_clients_sites.sql

@@ -1,100 +0,0 @@
--- GuruRMM Clients and Sites Schema
--- Adds multi-tenant support with clients, sites, and site-based agent registration
-
--- Clients table (organizations/companies)
-CREATE TABLE clients (
-    id UUID PRIMARY KEY DEFAULT gen_random_uuid(),
-    name VARCHAR(255) NOT NULL,
-    code VARCHAR(50) UNIQUE, -- Optional short code like "ACME"
-    notes TEXT,
-    is_active BOOLEAN DEFAULT TRUE,
-    created_at TIMESTAMPTZ DEFAULT NOW(),
-    updated_at TIMESTAMPTZ DEFAULT NOW()
-);
-
-CREATE INDEX idx_clients_name ON clients(name);
-CREATE INDEX idx_clients_code ON clients(code);
-
--- Trigger for clients updated_at
-CREATE TRIGGER update_clients_updated_at
-    BEFORE UPDATE ON clients
-    FOR EACH ROW
-    EXECUTE FUNCTION update_updated_at_column();
-
--- Sites table (locations under a client)
-CREATE TABLE sites (
-    id UUID PRIMARY KEY DEFAULT gen_random_uuid(),
-    client_id UUID NOT NULL REFERENCES clients(id) ON DELETE CASCADE,
-    name VARCHAR(255) NOT NULL,
-    -- Site code: human-friendly, used for agent registration (e.g., "BLUE-TIGER-4829")
-    site_code VARCHAR(50) UNIQUE NOT NULL,
-    -- API key hash for this site (all agents at site share this key)
-    api_key_hash VARCHAR(255) NOT NULL,
-    address TEXT,
-    notes TEXT,
-    is_active BOOLEAN DEFAULT TRUE,
-    created_at TIMESTAMPTZ DEFAULT NOW(),
-    updated_at TIMESTAMPTZ DEFAULT NOW()
-);
-
-CREATE INDEX idx_sites_client ON sites(client_id);
-CREATE INDEX idx_sites_code ON sites(site_code);
-CREATE INDEX idx_sites_api_key ON sites(api_key_hash);
-
--- Trigger for sites updated_at
-CREATE TRIGGER update_sites_updated_at
-    BEFORE UPDATE ON sites
-    FOR EACH ROW
-    EXECUTE FUNCTION update_updated_at_column();
-
--- Add new columns to agents table
--- device_id: unique hardware-derived identifier for the machine
-ALTER TABLE agents ADD COLUMN device_id VARCHAR(255);
-
--- site_id: which site this agent belongs to (nullable for legacy agents)
-ALTER TABLE agents ADD COLUMN site_id UUID REFERENCES sites(id) ON DELETE SET NULL;
-
--- Make api_key_hash nullable (new agents will use site's api_key)
-ALTER TABLE agents ALTER COLUMN api_key_hash DROP NOT NULL;
-
--- Index for looking up agents by device_id within a site
-CREATE UNIQUE INDEX idx_agents_site_device ON agents(site_id, device_id) WHERE site_id IS NOT NULL AND device_id IS NOT NULL;
-
--- Index for site lookups
-CREATE INDEX idx_agents_site ON agents(site_id);
-
--- Registration tokens table (optional: for secure site code distribution)
-CREATE TABLE registration_tokens (
-    id UUID PRIMARY KEY DEFAULT gen_random_uuid(),
-    site_id UUID NOT NULL REFERENCES sites(id) ON DELETE CASCADE,
-    token_hash VARCHAR(255) NOT NULL,
-    description VARCHAR(255),
-    uses_remaining INTEGER, -- NULL = unlimited
-    expires_at TIMESTAMPTZ,
-    created_at TIMESTAMPTZ DEFAULT NOW(),
-    created_by UUID REFERENCES users(id) ON DELETE SET NULL
-);
-
-CREATE INDEX idx_reg_tokens_site ON registration_tokens(site_id);
-CREATE INDEX idx_reg_tokens_hash ON registration_tokens(token_hash);
-
--- Function to generate a random site code (WORD-WORD-####)
--- This is just a helper; actual generation should be in application code
--- for better word lists
-CREATE OR REPLACE FUNCTION generate_site_code() RETURNS VARCHAR(50) AS $$
-DECLARE
-    words TEXT[] := ARRAY['ALPHA', 'BETA', 'GAMMA', 'DELTA', 'ECHO', 'FOXTROT',
-                          'BLUE', 'GREEN', 'RED', 'GOLD', 'SILVER', 'IRON',
-                          'HAWK', 'EAGLE', 'TIGER', 'LION', 'WOLF', 'BEAR',
-                          'NORTH', 'SOUTH', 'EAST', 'WEST', 'PEAK', 'VALLEY',
-                          'RIVER', 'OCEAN', 'STORM', 'CLOUD', 'STAR', 'MOON'];
-    word1 TEXT;
-    word2 TEXT;
-    num INTEGER;
-BEGIN
-    word1 := words[1 + floor(random() * array_length(words, 1))::int];
-    word2 := words[1 + floor(random() * array_length(words, 1))::int];
-    num := 1000 + floor(random() * 9000)::int;
-    RETURN word1 || '-' || word2 || '-' || num::text;
-END;
-$$ LANGUAGE plpgsql;