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soren
680bc72e75
Add a persistent `watcher_enabled` config key (default true). When false, the daemon host skips building the background watcher entirely: the poll thread never starts and no projects are registered. Manual index_repository is unaffected, and the config wiring stays unconditional so auto_index / auto_watch keep working even when the watcher is off. This is distinct from auto_watch, which only gates per-session registration while the watcher IS running. watcher_enabled is the master switch that stops the subsystem from starting at all — the request in #335 (doc-heavy repos where every save churns the graph baseline). The key is read once, when the daemon builds its host state. Changing it takes effect when the daemon next starts; docs/CONFIGURATION.md says so explicitly. A disabled watcher is not a daemon-startup failure — the daemon still comes up and still owns IPC, HTTP/UI, project locks, and manual indexing; only the watcher and the in-memory store backing it go unbuilt. - cli.h/cli.c: CBM_CONFIG_WATCHER_ENABLED key + cbm_config_watcher_enabled() predicate (NULL-safe, default true), registered as a CONFIG_KEYS row next to auto_watch. The table is no longer only a print list: since #1522/#1558 it also backs key validation, so `config set/get/reset watcher_enabled` would be rejected as an unknown key without that row, and the default recorded there (true) is the one the table comment asks to keep in sync with the runtime reader's fallback. - daemon/host.c: gate watcher construction in host_state_prepare() and the thread create in host_background_start(); log watcher.disabled when skipped. Teardown needed no change — stop NULL-checks, join is gated on watcher_started, and cbm_watcher_free is NULL-safe. - test_cli.c: cli_config_watcher_enabled_default_and_persist pins the config layer — default on, disable/re-enable spellings, persistence across reopen, and a NULL-config default (a config-store failure must never silently disable the watcher). - docs: document watcher_enabled, and add the previously-undocumented auto_watch row to CONFIGURATION.md so the watcher knobs are described together; README example. Closes #335. Signed-off-by: soren <nguiasoren@gmail.com>
