feat(cli): Add search, stats, embed, sync, health, and robot-docs commands

Extends the CLI with six new commands that complete the search pipeline:

- lore search <QUERY>: Hybrid search with mode selection (lexical,
  hybrid, semantic), rich filtering (--type, --author, --project,
  --label, --path, --after, --updated-after), result limits, and
  optional explain mode showing RRF score breakdowns. Safe FTS mode
  sanitizes user input; raw mode passes through for power users.

- lore stats: Document and index statistics with optional --check
  for integrity verification and --repair to fix inconsistencies
  (orphaned documents, missing FTS entries, stale dirty queue items).

- lore embed: Generate vector embeddings via Ollama. Supports
  --retry-failed to re-attempt previously failed embeddings.

- lore generate-docs: Drain the dirty queue to regenerate documents.
  --full seeds all entities for complete rebuild. --project scopes
  to a single project.

- lore sync: Full pipeline orchestration (ingest issues + MRs,
  generate-docs, embed) with --no-embed and --no-docs flags for
  partial runs. Reports per-stage results and total elapsed time.

- lore health: Quick pre-flight check (config exists, DB exists,
  schema current). Returns exit code 1 if unhealthy. Designed for
  agent pre-flight scripts.

- lore robot-docs: Machine-readable command manifest for agent
  self-discovery. Returns all commands, flags, examples, exit codes,
  and recommended workflows as structured JSON.

Also enhances lore init with --gitlab-url, --token-env-var, and
--projects flags for fully non-interactive robot-mode initialization.
Fixes init's force/non-interactive precedence logic and adds JSON
output for robot mode.

Updates all command files for the GiError -> LoreError rename.

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

src/cli/commands/mod.rs

@@ -3,21 +3,33 @@
 pub mod auth_test;
 pub mod count;
 pub mod doctor;
+pub mod embed;
+pub mod generate_docs;
 pub mod ingest;
 pub mod init;
 pub mod list;
+pub mod search;
 pub mod show;
+pub mod stats;
+pub mod sync;
 pub mod sync_status;
 
 pub use auth_test::run_auth_test;
 pub use count::{print_count, print_count_json, run_count};
 pub use doctor::{print_doctor_results, run_doctor};
+pub use embed::{print_embed, print_embed_json, run_embed};
+pub use generate_docs::{print_generate_docs, print_generate_docs_json, run_generate_docs};
+pub use stats::{print_stats, print_stats_json, run_stats};
+pub use search::{
+    print_search_results, print_search_results_json, run_search, SearchCliFilters, SearchResponse,
+};
 pub use ingest::{print_ingest_summary, print_ingest_summary_json, run_ingest};
 pub use init::{InitInputs, InitOptions, InitResult, run_init};
 pub use list::{
     ListFilters, MrListFilters, open_issue_in_browser, open_mr_in_browser, print_list_issues,
     print_list_issues_json, print_list_mrs, print_list_mrs_json, run_list_issues, run_list_mrs,
 };
+pub use sync::{print_sync, print_sync_json, run_sync, SyncOptions, SyncResult};
 pub use show::{
     print_show_issue, print_show_issue_json, print_show_mr, print_show_mr_json, run_show_issue,
     run_show_mr,