feat: remove TimescaleDB, dead PG stores, and storage feature flags

Complete the ClickHouse migration by removing all PostgreSQL analytics
code. PostgreSQL now serves only RBAC, config, and audit — all
observability data is exclusively in ClickHouse.

- Delete 6 dead PostgreSQL store classes (executions, stats, diagrams,
  events, metrics, metrics-query) and 2 integration tests
- Delete RetentionScheduler (ClickHouse TTL handles retention)
- Remove all 7 cameleer.storage.* feature flags from application.yml
- Remove all @ConditionalOnProperty from ClickHouse beans in StorageBeanConfig
- Consolidate 14 Flyway migrations (V1-V14) into single clean V1 with
  only RBAC/config/audit tables (no TimescaleDB, no analytics tables)
- Switch from timescale/timescaledb-ha:pg16 to postgres:16 everywhere
  (docker-compose, deploy/postgres.yaml, test containers)
- Remove TimescaleDB check and /metrics-pipeline from DatabaseAdminController
- Set clickhouse.enabled default to true

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

cameleer3-server-app/src/main/resources/db/migration/V1__init.sql

@@ -1,8 +1,6 @@
--- V1__init.sql - Consolidated schema for Cameleer3
-
--- Extensions
-CREATE EXTENSION IF NOT EXISTS timescaledb;
-CREATE EXTENSION IF NOT EXISTS timescaledb_toolkit;
+-- V1__init.sql — PostgreSQL schema for Cameleer3 Server
+-- PostgreSQL stores RBAC, configuration, and audit data only.
+-- All observability data (executions, metrics, diagrams, logs, stats) is in ClickHouse.
 
 -- =============================================================
 -- RBAC
@@ -40,7 +38,6 @@ CREATE TABLE groups (
     created_at      TIMESTAMPTZ NOT NULL DEFAULT now()
 );
 
--- Built-in Admins group
 INSERT INTO groups (id, name) VALUES
     ('00000000-0000-0000-0000-000000000010', 'Admins');
 
@@ -50,7 +47,6 @@ CREATE TABLE group_roles (
     PRIMARY KEY (group_id, role_id)
 );
 
--- Assign ADMIN role to Admins group
 INSERT INTO group_roles (group_id, role_id) VALUES
     ('00000000-0000-0000-0000-000000000010', '00000000-0000-0000-0000-000000000004');
 
@@ -71,113 +67,6 @@ CREATE INDEX idx_user_groups_user_id ON user_groups(user_id);
 CREATE INDEX idx_group_roles_group_id ON group_roles(group_id);
 CREATE INDEX idx_groups_parent ON groups(parent_group_id);
 
--- =============================================================
--- Execution data (TimescaleDB hypertables)
--- =============================================================
-
-CREATE TABLE executions (
-    execution_id    TEXT        NOT NULL,
-    route_id        TEXT        NOT NULL,
-    agent_id        TEXT        NOT NULL,
-    application_name TEXT       NOT NULL,
-    status          TEXT        NOT NULL,
-    correlation_id  TEXT,
-    exchange_id     TEXT,
-    start_time      TIMESTAMPTZ NOT NULL,
-    end_time        TIMESTAMPTZ,
-    duration_ms     BIGINT,
-    error_message   TEXT,
-    error_stacktrace TEXT,
-    diagram_content_hash TEXT,
-    created_at      TIMESTAMPTZ NOT NULL DEFAULT now(),
-    updated_at      TIMESTAMPTZ NOT NULL DEFAULT now(),
-    PRIMARY KEY (execution_id, start_time)
-);
-
-SELECT create_hypertable('executions', 'start_time', chunk_time_interval => INTERVAL '1 day');
-
-CREATE INDEX idx_executions_agent_time ON executions (agent_id, start_time DESC);
-CREATE INDEX idx_executions_route_time ON executions (route_id, start_time DESC);
-CREATE INDEX idx_executions_app_time ON executions (application_name, start_time DESC);
-CREATE INDEX idx_executions_correlation ON executions (correlation_id);
-
-CREATE TABLE processor_executions (
-    id                  BIGSERIAL,
-    execution_id        TEXT        NOT NULL,
-    processor_id        TEXT        NOT NULL,
-    processor_type      TEXT        NOT NULL,
-    diagram_node_id     TEXT,
-    application_name    TEXT        NOT NULL,
-    route_id            TEXT        NOT NULL,
-    depth               INT         NOT NULL,
-    parent_processor_id TEXT,
-    status              TEXT        NOT NULL,
-    start_time          TIMESTAMPTZ NOT NULL,
-    end_time            TIMESTAMPTZ,
-    duration_ms         BIGINT,
-    error_message       TEXT,
-    error_stacktrace    TEXT,
-    input_body          TEXT,
-    output_body         TEXT,
-    input_headers       JSONB,
-    output_headers      JSONB,
-    created_at          TIMESTAMPTZ NOT NULL DEFAULT now(),
-    UNIQUE (execution_id, processor_id, start_time)
-);
-
-SELECT create_hypertable('processor_executions', 'start_time', chunk_time_interval => INTERVAL '1 day');
-
-CREATE INDEX idx_proc_exec_execution ON processor_executions (execution_id);
-CREATE INDEX idx_proc_exec_type_time ON processor_executions (processor_type, start_time DESC);
-
--- =============================================================
--- Agent metrics
--- =============================================================
-
-CREATE TABLE agent_metrics (
-    agent_id           TEXT             NOT NULL,
-    metric_name        TEXT             NOT NULL,
-    metric_value       DOUBLE PRECISION NOT NULL,
-    tags               JSONB,
-    collected_at       TIMESTAMPTZ      NOT NULL,
-    server_received_at TIMESTAMPTZ      NOT NULL DEFAULT now()
-);
-
-SELECT create_hypertable('agent_metrics', 'collected_at', chunk_time_interval => INTERVAL '1 day');
-
-CREATE INDEX idx_metrics_agent_name ON agent_metrics (agent_id, metric_name, collected_at DESC);
-
--- =============================================================
--- Route diagrams
--- =============================================================
-
-CREATE TABLE route_diagrams (
-    content_hash TEXT        PRIMARY KEY,
-    route_id     TEXT        NOT NULL,
-    agent_id     TEXT        NOT NULL,
-    definition   TEXT        NOT NULL,
-    created_at   TIMESTAMPTZ NOT NULL DEFAULT now()
-);
-
-CREATE INDEX idx_diagrams_route_agent ON route_diagrams (route_id, agent_id);
-
--- =============================================================
--- Agent events
--- =============================================================
-
-CREATE TABLE agent_events (
-    id         BIGSERIAL    PRIMARY KEY,
-    agent_id   TEXT         NOT NULL,
-    app_id     TEXT         NOT NULL,
-    event_type TEXT         NOT NULL,
-    detail     TEXT,
-    timestamp  TIMESTAMPTZ  NOT NULL DEFAULT NOW()
-);
-
-CREATE INDEX idx_agent_events_agent ON agent_events(agent_id, timestamp DESC);
-CREATE INDEX idx_agent_events_app   ON agent_events(app_id, timestamp DESC);
-CREATE INDEX idx_agent_events_time  ON agent_events(timestamp DESC);
-
 -- =============================================================
 -- Server configuration
 -- =============================================================
@@ -190,7 +79,30 @@ CREATE TABLE server_config (
 );
 
 -- =============================================================
--- Admin
+-- Application configuration
+-- =============================================================
+
+CREATE TABLE application_config (
+    application   TEXT PRIMARY KEY,
+    config_val    JSONB NOT NULL,
+    version       INTEGER NOT NULL DEFAULT 1,
+    updated_at    TIMESTAMPTZ NOT NULL DEFAULT now(),
+    updated_by    TEXT
+);
+
+CREATE TABLE app_settings (
+    application_id    TEXT             PRIMARY KEY,
+    sla_threshold_ms  INTEGER          NOT NULL DEFAULT 300,
+    health_error_warn DOUBLE PRECISION NOT NULL DEFAULT 1.0,
+    health_error_crit DOUBLE PRECISION NOT NULL DEFAULT 5.0,
+    health_sla_warn   DOUBLE PRECISION NOT NULL DEFAULT 99.0,
+    health_sla_crit   DOUBLE PRECISION NOT NULL DEFAULT 95.0,
+    created_at        TIMESTAMPTZ      NOT NULL DEFAULT now(),
+    updated_at        TIMESTAMPTZ      NOT NULL DEFAULT now()
+);
+
+-- =============================================================
+-- Audit log
 -- =============================================================
 
 CREATE TABLE audit_log (
@@ -211,93 +123,3 @@ CREATE INDEX idx_audit_log_username ON audit_log (username);
 CREATE INDEX idx_audit_log_category ON audit_log (category);
 CREATE INDEX idx_audit_log_action ON audit_log (action);
 CREATE INDEX idx_audit_log_target ON audit_log (target);
-
--- =============================================================
--- Continuous aggregates
--- =============================================================
-
-CREATE MATERIALIZED VIEW stats_1m_all
-WITH (timescaledb.continuous, timescaledb.materialized_only = false) AS
-SELECT
-    time_bucket('1 minute', start_time) AS bucket,
-    COUNT(*) AS total_count,
-    COUNT(*) FILTER (WHERE status = 'FAILED') AS failed_count,
-    COUNT(*) FILTER (WHERE status = 'RUNNING') AS running_count,
-    SUM(duration_ms) AS duration_sum,
-    MAX(duration_ms) AS duration_max,
-    approx_percentile(0.99, percentile_agg(duration_ms::DOUBLE PRECISION)) AS p99_duration
-FROM executions
-WHERE status IS NOT NULL
-GROUP BY bucket
-WITH NO DATA;
-
-
-CREATE MATERIALIZED VIEW stats_1m_app
-WITH (timescaledb.continuous, timescaledb.materialized_only = false) AS
-SELECT
-    time_bucket('1 minute', start_time) AS bucket,
-    application_name,
-    COUNT(*) AS total_count,
-    COUNT(*) FILTER (WHERE status = 'FAILED') AS failed_count,
-    COUNT(*) FILTER (WHERE status = 'RUNNING') AS running_count,
-    SUM(duration_ms) AS duration_sum,
-    MAX(duration_ms) AS duration_max,
-    approx_percentile(0.99, percentile_agg(duration_ms::DOUBLE PRECISION)) AS p99_duration
-FROM executions
-WHERE status IS NOT NULL
-GROUP BY bucket, application_name
-WITH NO DATA;
-
-
-CREATE MATERIALIZED VIEW stats_1m_route
-WITH (timescaledb.continuous, timescaledb.materialized_only = false) AS
-SELECT
-    time_bucket('1 minute', start_time) AS bucket,
-    application_name,
-    route_id,
-    COUNT(*) AS total_count,
-    COUNT(*) FILTER (WHERE status = 'FAILED') AS failed_count,
-    COUNT(*) FILTER (WHERE status = 'RUNNING') AS running_count,
-    SUM(duration_ms) AS duration_sum,
-    MAX(duration_ms) AS duration_max,
-    approx_percentile(0.99, percentile_agg(duration_ms::DOUBLE PRECISION)) AS p99_duration
-FROM executions
-WHERE status IS NOT NULL
-GROUP BY bucket, application_name, route_id
-WITH NO DATA;
-
-
-CREATE MATERIALIZED VIEW stats_1m_processor
-WITH (timescaledb.continuous, timescaledb.materialized_only = false) AS
-SELECT
-    time_bucket('1 minute', start_time) AS bucket,
-    application_name,
-    route_id,
-    processor_type,
-    COUNT(*) AS total_count,
-    COUNT(*) FILTER (WHERE status = 'FAILED') AS failed_count,
-    SUM(duration_ms) AS duration_sum,
-    MAX(duration_ms) AS duration_max,
-    approx_percentile(0.99, percentile_agg(duration_ms::DOUBLE PRECISION)) AS p99_duration
-FROM processor_executions
-GROUP BY bucket, application_name, route_id, processor_type
-WITH NO DATA;
-
-
-CREATE MATERIALIZED VIEW stats_1m_processor_detail
-WITH (timescaledb.continuous, timescaledb.materialized_only = false) AS
-SELECT
-    time_bucket('1 minute', start_time) AS bucket,
-    application_name,
-    route_id,
-    processor_id,
-    processor_type,
-    COUNT(*) AS total_count,
-    COUNT(*) FILTER (WHERE status = 'FAILED') AS failed_count,
-    SUM(duration_ms) AS duration_sum,
-    MAX(duration_ms) AS duration_max,
-    approx_percentile(0.99, percentile_agg(duration_ms)) AS p99_duration
-FROM processor_executions
-GROUP BY bucket, application_name, route_id, processor_id, processor_type
-WITH NO DATA;
-